At present, Rong Yun is one of the more professional medical big data in China. For drug project, it is very good to inquire about the description information, clinical information and registration information of drugs listed at home and abroad, analyze competitors and understand the difficulty of competing products. There are indications, reference preparations, a large number of patent materials, original core patents, avoiding patent infringement, raw material drug data, selecting the final synthesis route, determining intermediate reagents, drug sales data, and understanding market sales data.