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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY ¥ in Thousands, $ in Thousands | CNY (¥) shares | USD ($) shares | Series A Preferred Stock [Member] CNY (¥) | Series B Preferred Stock [Member] CNY (¥) | Series C1 Preferred Stock [Member] CNY (¥) | Series C2 Preferred Stock [Member] CNY (¥) | Series D Preferred Stock [Member] CNY (¥) | Ordinary shares [Member] Class A Ordinary Shares [Member] CNY (¥) shares | Ordinary shares [Member] Series A Preferred Stock [Member] Class A Ordinary Shares [Member] CNY (¥) shares | Ordinary shares [Member] Series B Preferred Stock [Member] Class A Ordinary Shares [Member] CNY (¥) shares | Ordinary shares [Member] Series C1 Preferred Stock [Member] Class A Ordinary Shares [Member] CNY (¥) shares | Ordinary shares [Member] Series C2 Preferred Stock [Member] Class A Ordinary Shares [Member] CNY (¥) shares | Ordinary shares [Member] Series D Preferred Stock [Member] Class A Ordinary Shares [Member] CNY (¥) shares | Additional paid-in capital [Member] CNY (¥) | Additional paid-in capital [Member] Series A Preferred Stock [Member] CNY (¥) | Additional paid-in capital [Member] Series B Preferred Stock [Member] CNY (¥) | Additional paid-in capital [Member] Series C1 Preferred Stock [Member] CNY (¥) | Additional paid-in capital [Member] Series C2 Preferred Stock [Member] CNY (¥) | Additional paid-in capital [Member] Series D Preferred Stock [Member] CNY (¥) | Subscription receivables [Member] CNY (¥) | Subscription receivables [Member] Series A Preferred Stock [Member] CNY (¥) | Subscription receivables [Member] Series B Preferred Stock [Member] CNY (¥) | Subscription receivables [Member] Series C1 Preferred Stock [Member] CNY (¥) | Subscription receivables [Member] Series C2 Preferred Stock [Member] CNY (¥) | Subscription receivables [Member] Series D Preferred Stock [Member] CNY (¥) | Accumulated deficit CNY (¥) | Accumulated deficit Series A Preferred Stock [Member] CNY (¥) | Accumulated deficit Series B Preferred Stock [Member] CNY (¥) | Accumulated deficit Series C1 Preferred Stock [Member] CNY (¥) | Accumulated deficit Series C2 Preferred Stock [Member] CNY (¥) | Accumulated deficit Series D Preferred Stock [Member] CNY (¥) | Accumulated other comprehensive income (loss) [Member] CNY (¥) | Accumulated other comprehensive income (loss) [Member] Series A Preferred Stock [Member] CNY (¥) | Accumulated other comprehensive income (loss) [Member] Series B Preferred Stock [Member] CNY (¥) | Accumulated other comprehensive income (loss) [Member] Series C1 Preferred Stock [Member] CNY (¥) | Accumulated other comprehensive income (loss) [Member] Series C2 Preferred Stock [Member] CNY (¥) | Accumulated other comprehensive income (loss) [Member] Series D Preferred Stock [Member] CNY (¥) | Total Baozun shareholders’ equity [Member] CNY (¥) | Total Baozun shareholders’ equity [Member] Series A Preferred Stock [Member] CNY (¥) | Total Baozun shareholders’ equity [Member] Series B Preferred Stock [Member] CNY (¥) | Total Baozun shareholders’ equity [Member] Series C1 Preferred Stock [Member] CNY (¥) | Total Baozun shareholders’ equity [Member] Series C2 Preferred Stock [Member] CNY (¥) | Total Baozun shareholders’ equity [Member] Series D Preferred Stock [Member] CNY (¥) | Noncontrolling interests [Member] CNY (¥) | Noncontrolling interests [Member] Series A Preferred Stock [Member] CNY (¥) | Noncontrolling interests [Member] Series B Preferred Stock [Member] CNY (¥) | Noncontrolling interests [Member] Series C1 Preferred Stock [Member] CNY (¥) | Noncontrolling interests [Member] Series C2 Preferred Stock [Member] CNY (¥) | Noncontrolling interests [Member] Series D Preferred Stock [Member] CNY (¥)
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Beginning balance at Dec. 31, 2013 | ¥ (232,375) |  |  |  |  |  |  | ¥ 18 |  |  |  |  |  |  |  |  |  |  |  | ¥ (18) |  |  |  |  |  | ¥ (232,330) |  |  |  |  |  | ¥ (45) |  |  |  |  |  | ¥ (232,375) |  |  |  |  |  |  |  |  |  |  |
Beginning balance, shares at Dec. 31, 2013 | shares |  |  |  |  |  |  |  | 29,983,883 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | (59,814) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (59,814) |  |  |  |  |  |  |  |  |  |  |  | (59,814) |  |  |  |  |  |  |  |  |  |  |
Repurchase of ordinary shares (Note 11) | ¥ (20,963) |  |  |  |  |  |  | ¥ (1) |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  | (20,963) |  |  |  |  |  |  |  |  |  |  |  | (20,963) |  |  |  |  |  |  |  |  |  |  |
Repurchase of ordinary shares (Note 11), shares | shares | (1,925,063) | (1,925,063) |  |  |  |  |  | (1,925,063) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment of ordinary shares | ¥ 17 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 17 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 17 |  |  |  |  |  |  |  |  |  |  |
Deemed dividend from issuance of preferred share series C2 (Note 16) | (16,666) |  |  |  |  | ¥ (16,666) |  |  |  |  |  |  |  |  |  |  |  | ¥ (3,039) |  |  |  |  |  |  |  |  |  |  |  | ¥ (13,627) |  |  |  |  |  |  |  |  |  |  |  | ¥ (16,666) |  |  |  |  |  |  |
Share-based compensation | 84,963 |  |  |  |  |  |  |  |  |  |  |  |  | 84,963 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 84,963 |  |  |  |  |  |  |  |  |  |  |
Consolidation of VIE | 529 |  |  |  |  |  |  |  |  |  |  |  |  | 1,000 |  |  |  |  |  |  |  |  |  |  |  | (471) |  |  |  |  |  |  |  |  |  |  |  | 529 |  |  |  |  |  |  |  |  |  |  |
Change in redemption value of convertible redeemable preferred shares | (79,169) |  | ¥ 6,214 | ¥ 21,943 | ¥ 46,328 |  | ¥ 4,684 |  |  |  |  |  |  | (79,169) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (79,169) |  |  |  |  |  |  |  |  |  |  |
Foreign currency translation adjustment | 1,249 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,249 |  |  |  |  |  | 1,249 |  |  |  |  |  |  |  |  |  |  |
Ending balance at Dec. 31, 2014 | (322,229) |  |  |  |  |  |  | ¥ 17 |  |  |  |  |  | 3,755 |  |  |  |  |  |  |  |  |  |  |  | (327,205) |  |  |  |  |  | 1,204 |  |  |  |  |  | (322,229) |  |  |  |  |  |  |  |  |  |  |
Ending balance, shares at Dec. 31, 2014 | shares |  |  |  |  |  |  |  | 28,058,820 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | 22,621 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 22,621 |  |  |  |  |  |  |  |  |  |  |  | 22,621 |  |  |  |  |  |  |  |  |  |  |
Repurchase of ordinary shares (Note 11) | (13,958) |  |  |  |  |  |  | ¥ (1) |  |  |  |  |  | (13,957) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (13,958) |  |  |  |  |  |  |  |  |  |  |
Repurchase of ordinary shares (Note 11), shares | shares |  |  |  |  |  |  |  | (803,811) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deemed dividend from issuance of preferred share series C2 (Note 16) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation | 25,195 |  |  |  |  |  |  |  |  |  |  |  |  | 25,195 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25,195 |  |  |  |  |  |  |  |  |  |  |
Conversion of preferred shares into class A ordinary shares upon IPO |  |  | 57,572 | 208,082 | 367,629 | 37,630 | 155,704 |  | ¥ 12 | ¥ 16 | ¥ 18 | ¥ 1 | ¥ 5 |  | ¥ 57,560 | ¥ 208,066 | ¥ 367,611 | ¥ 37,629 | ¥ 155,699 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 57,572 | ¥ 208,082 | ¥ 367,629 | ¥ 37,630 | ¥ 155,704 |  |  |  |  |  |
Conversion of preferred shares into class A ordinary shares upon IPO, shares | shares |  |  |  |  |  |  |  |  | 19,622,241 | 26,532,203 | 29,056,332 | 1,925,063 | 7,504,324 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise of share options | ¥ 161 |  |  |  |  |  |  | ¥ 1 |  |  |  |  |  | 160 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 161 |  |  |  |  |  |  |  |  |  |  |
Exercise of share options, shares | shares | 1,626,197 | 1,626,197 |  |  |  |  |  | 1,626,197 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Change in redemption value of convertible redeemable preferred shares | ¥ (25,332) |  | ¥ 1,648 | ¥ 5,957 | ¥ 12,453 |  | ¥ 5,274 |  |  |  |  |  |  | (9,417) |  |  |  |  |  |  |  |  |  |  |  | (15,915) |  |  |  |  |  |  |  |  |  |  |  | (25,332) |  |  |  |  |  |  |  |  |  |  |
Issuance of ordinary shares | ¥ 703,388 |  |  |  |  |  |  | ¥ 24 |  |  |  |  |  | 703,364 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 703,388 |  |  |  |  |  |  |  |  |  |  |
Issuance of ordinary shares, shares | shares | 37,950,000 | 37,950,000 |  |  |  |  |  | 37,950,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency translation adjustment | ¥ 18,008 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18,008 |  |  |  |  |  | 18,008 |  |  |  |  |  |  |  |  |  |  |
Ending balance at Dec. 31, 2015 | 1,234,471 |  |  |  |  |  |  | ¥ 93 |  |  |  |  |  | 1,535,665 |  |  |  |  |  |  |  |  |  |  |  | (320,499) |  |  |  |  |  | 19,212 |  |  |  |  |  | 1,234,471 |  |  |  |  |  |  |  |  |  |  |
Ending balance, shares at Dec. 31, 2015 | shares |  |  |  |  |  |  |  | 151,471,369 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | 85,424 | $ 12,303 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 86,633 |  |  |  |  |  |  |  |  |  |  |  | 86,633 |  |  |  |  |  | (1,209) |  |  |  |  |
Repurchase of ordinary shares (Note 11) | (50,842) |  |  |  |  |  |  | ¥ (3) |  |  |  |  |  | (50,839) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (50,842) |  |  |  |  |  |  |  |  |  |  |
Repurchase of ordinary shares (Note 11), shares | shares |  |  |  |  |  |  |  | (3,603,642) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deemed dividend from issuance of preferred share series C2 (Note 16) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation | 34,185 |  |  |  |  |  |  |  |  |  |  |  |  | 34,185 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 34,185 |  |  |  |  |  |  |  |  |  |  |
Exercise of share options | ¥ 3,943 |  |  |  |  |  |  | ¥ 4 |  |  |  |  |  | 3,939 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,943 |  |  |  |  |  |  |  |  |  |  |
Exercise of share options, shares | shares | 2,544,255 | 2,544,255 |  |  |  |  |  | 2,544,255 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Change in redemption value of convertible redeemable preferred shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of ordinary shares | ¥ 231,017 |  |  |  |  |  |  | ¥ 6 |  |  |  |  |  | 231,011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 231,017 |  |  |  |  |  |  |  |  |  |  |
Issuance of ordinary shares, shares | shares | 9,000,000 | 9,000,000 |  |  |  |  |  | 9,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional capital contribution from shareholders (Note 13) | ¥ 7,469 |  |  |  |  |  |  |  |  |  |  |  |  | 7,469 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,469 |  |  |  |  |  |  |  |  |  |  |
Contribution from noncontrolling interest holder | 14,063 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14,063 |  |  |  |  |
Deconsolidation of Shanghai Baozun-CJ E-Commerce Co., Ltd ("Baozun CJ") (Note 8) | (12,854) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (12,854) |  |  |  |  |
Foreign currency translation adjustment | 25,136 | $ 3,620 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25,136 |  |  |  |  |  | 25,136 |  |  |  |  |  |  |  |  |  |  |
Ending balance at Dec. 31, 2016 | ¥ 1,572,012 | $ 226,416 |  |  |  |  |  | ¥ 100 |  |  |  |  |  | ¥ 1,761,430 |  |  |  |  |  |  |  |  |  |  |  | ¥ (233,866) |  |  |  |  |  | ¥ 44,348 |  |  |  |  |  | ¥ 1,572,012 |  |  |  |  |  |  |  |  |  |  |
Ending balance, shares at Dec. 31, 2016 | shares |  |  |  |  |  |  |  | 159,411,982 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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