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Document and Entity Information
 12 Months Ended
Dec. 31, 2019
shares
Document and Entity Information  
Document Type 20-F
Amendment Flag false
Document Period End Date Dec. 31, 2019
Document Fiscal Year Focus 2019
Document Fiscal Period Focus FY
Entity Registrant Name DAQO NEW ENERGY CORP.
Entity Central Index Key 0001477641
Current Fiscal Year End Date --12-31
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Filer Category Accelerated Filer
Trading Symbol DQ
Entity Common Stock, Shares Outstanding 347,419,152
Entity Shell Company false
Entity Emerging Growth Company false
Entity Interactive Data Current Yes
Document Registration Statement false
Document Annual Report true
Document Transition Report false
Document Shell Company Report false