In recent years, precision targeted drugs have been rapidly promoted and applied. In the process of application, the market demand of microecological preparations for tumor treatment is gradually emerging. Microecological preparations play an important role in restoring the balance of human flora, especially in the intestinal tract, stabilizing the internal environment of human body and adjusting the imbalance of flora. CPLT makes a panoramic analysis for the development of microecological drugs and drug combination. CPLT provides the suggestion on patent landscaping strategy by taking the comprehensive research on the current situation of the industry and product development prospect combined with the patent competition situation.