Yingni Li engages primarily in the research of the pathogenesis of autoimmune diseases and the application of clinical experimental diagnosis. She has got several grants from National Natural Science Foundation of China (NSFC) and Peking University People’s Hospital. She as the first author published 5 SCI (Science Citation Index) papers with the highest impact factor of 13.4. She obtained 2 national invention patents and received 3 awards, including the Chinese Medical Science and Technology Award.