Organization and Basis of Presentation (Tables)

12 Months Ended

Dec. 31, 2021

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Summary of Major Subsidiaries VIEs and VIEs' Subsidiaries

As of December 31, 2021, details of the Company’s major subsidiaries, VIEs and VIEs’ subsidiaries were as follows:

Name (1)	Date of establishment/ acquisition	Place of establishment	Percentage of direct or indirect economic ownership	Principal activities
Subsidiaries:
Sunlands Online Education HK    Limited ("Sunlands HK")	October 6, 2015	HongKong	100%	Investment holding
Wuhan Studyvip Online Education Co.,    Ltd. ("Wuhan Zhibo")	August 2, 2017	PRC	100%	Provision of technical consultation and services
Tianjin Alaman Education Technology    Co., Ltd. ("Tianjin Alaman")	July 31, 2017	PRC	100%	Provision of technical consultation and services
Wuhan Shangde Online Education    Technology Co., Ltd. ("Wuhan    Shangde")	June 25, 2019	PRC	100%	Provision of education services
Variable interest entities ("VIEs"):
Beijing Shangde Online Education    Technology Co., Ltd. ("Beijing    Sunlands")	September 27, 2013	PRC	N/A*	Investment holding and provision of education services
Tianjin Shangde Online Education    Technology Co., Ltd. ("Tianjin    Shangde")	March 21, 2018	PRC	N/A*	Provision of education services
Wuhan Jiayan Online Education    Technology Co., Ltd. ("Wuhan    Jiayan")	August 5, 2020	PRC	N/A*	Provision of education services
VIEs’ subsidiaries:
Beijing Baobian Consumer Technology    Co., Ltd.	March 13, 2012	PRC	N/A*	Provision of education, consumer and technology services
Beijing Shangren Chongye Education    Technology Co., Ltd.	September 27, 2013	PRC	N/A*	Provision of education services
Beijing Jiayan Online Education    Technology Co., Ltd.	August 26, 2020	PRC	N/A*	Provision of education services

* These entities are controlled by the Company pursuant to the contractual agreements disclosed below.  

(1) The English names are for identification purpose only.