 Abstract background DOIN APP is the short video APP with the largest number of users in China. Objective this study aimed to evaluate the quality and reliability of short videos about cosmetic surgery on DOIN. Methods in August 2022, we retrieved and screened 300 short videos related to cosmetic surgery from DOIN, extracted basic video information, encoded the content and identified the video source. The quality and reliability of short video information were evaluated using the DESERN instrument. Results a total of 168 short videos of cosmetic surgery were included in the survey, and the video sources included personal accounts and institutional accounts. Overall, the total proportion of institutional accounts, 47168, 27.98%, is significantly less than that of personal accounts, 121168, 72.02%, non-health professionals received the most praises, comments and even collections and reposts while for-profit academic organizations or institutions received the least. The DESERN scores of 168 short videos of cosmetic surgery were 3.7. This article was authored by Jianfei Zhong, Peng Peng Han, Yu Jun Tang and others. We are article.tv, links in the description below.