Objective To establish an indicator system for standardized clinical training base of assistant general practitioners in Beijing. Methods From September 2023 to December 2023, an indicator system was constructed based on the CIPP (context, input, process and product) model, using the Delphi method. Twenty experts were selected for consultation from the professionals who engaged in clinical teaching management and general practice standardized training base evaluation in Beijing. The index weight and consistency rate (CR) were calculated by analytic hierarchy process. Results The questionnaire recovery rates of the three rounds of consultation were all over 0.7. The expert authority coefficients were 0.90,0.91,0.91, and Kendall′s W values were 0.244,0.059,0.129 (both the first round and the third round had P<0.001). The coefficient of variation (CV) of importance and feasibility of all items in the three rounds of consultation were less than 0.25. The constructed evaluation index system includes 5 first-level indicators (qualifications and conditions, teaching organization and system, teaching staff, operation management, quality monitoring), 12 second-level indicators and 32 third-level indicators. The CR of each level of indexes was <0.1. Conclusions The evaluation indicator system of standardized clinical training base for assistant general practitioners in Beijing based on CIPP model is scientific and authoritative, which can provide basis for objectively evaluating the homogenization construction and management effect of clinical training base.