Purpose/Significance To summarize the common dimensions of data quality evaluation, and to expound the types and characteristics of medical big data quality evaluation and management methods, so as to provide references for medical big data quality evaluation and management. Method/Process The paper reviews domestic and foreign medical big data quality related literature, and emphatically analyzes medical big data quality evaluation dimensions, methods and management. Result/Conclusion Data quality standards are conducive to standardized management of medical big data. A scientific and reasonable medical big data quality evaluation system and a whole-process data quality management system in line with national conditions in China should be established and improved as soon as possible to promote the development and application of medical big data in our country.