XML 72 R55.htm IDEA: XBRL DOCUMENT v3.24.1.u1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Term Deposits (Details)	Dec. 31, 2023 CNY (¥)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 CNY (¥)
Total term deposits held	¥ 97,555,565		¥ 228,589,770
Term deposits-current	97,555,565	$ 13,740,414	208,589,770
Term deposits-non-current			20,000,000
Denominated in RMB
Total term deposits held	20,000,000		20,000,000
Denominated in USD
Total term deposits held	¥ 77,555,565		¥ 208,589,770

X

- Definition

Amount of term deposits with banks, which have original maturities of three months or less and are readily convertible to known amounts of cash.

+ References

No definition available.

+ Details

Name:	niu_TermDepositsWithBanks
Namespace Prefix:	niu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of term deposits placed with bank with original maturities of less than or equal to one year.

+ References

No definition available.

+ Details

Name:	niu_TermDepositsWithBanksCurrent
Namespace Prefix:	niu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of term deposits placed with bank with original maturities of more than one year.

+ References

No definition available.

+ Details

Name:	niu_TermDepositsWithBanksNonCurrent
Namespace Prefix:	niu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	srt_CurrencyAxis=currency_CNY
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CurrencyAxis=currency_USD
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: