Based on the comparative analysis of outpatient (Ambulatory Patient Groups，APG) and inpatient (Diagnosis Related Groups，DRG/Diagnosis-Intervention Packet，DIP) payment methods，combined with the pilot experience of outpatient and inpatient payment method reform cities in China，it summarizes the operation logic，impact mechanism and implementation effect of medical insurance payment method reform in China. It provides empirical support for promoting the establishment and improvement of effective and efficient multi-compound medical insurance payment methods，realizing the comprehensive medical service management mechanism of "classified settlement and coordinated promotion"，improving the efficiency of medical insurance funds，and ensuring residents' lives and health. Finally，from the policy level，technical level and fund level，it puts forward relevant policy suggestions on optimizing the governance path of Chinese medical insurance payment mode reform.