v3.7.0.1
Document And Entity Information
12 Months Ended
Dec. 31, 2016
shares
Document Information [Line Items]  
Document Type 20-F
Document Period End Date Dec. 31, 2016
Amendment Flag false
Entity Registrant Name Tarena International, Inc.
Entity Central Index Key 0001592560
Entity Current Reporting Status Yes
Current Fiscal Year End Date --12-31
Entity Filer Category Accelerated Filer
Entity Well-known Seasoned Issuer No
Document Fiscal Year Focus 2016
Document Fiscal Period Focus FY
Common Class A [Member]  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 47,160,248
Common Class B [Member]  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 8,895,249