RESUMEN
Data is an effective vehicle for clinical evaluation. High-quality data is the key to ensure universal conclusions. In the context of medical data information, based on problems of clinical research data of traditional Chinese medicine (TCM), the author described the complexity and diversity of clinical data, and existed problem of data access in extant research mode. In the era of big data, by analyzing application status of both domestic and foreign clinical data, as well as the difference of application ways on structured and unstructured data of electronic medical records, and the requirements of data in different models in clinical research, the author suggested to establish development model for data sharing in both clinical practice and scientific research in order to adapt to the diversification and information of data.