In order to explore the relationship between the indirect use behavior of doctors' electronic medical record system and work performance, this paper puts forward the research hypothesis and theoretical model of the relationship between the indirect system use and work performance based on social network theory, technology acceptance model and perceived risk theory. Through convenient sampling method, online questionnaire survey was conducted on doctors in 6 tertiary public hospitals in Anhui Province. After data analysis, 506 valid data were obtained. SmartPLS3.0 was used for reliability and validity test and model analysis. The results showed that the incidence of doctors' indirect use behavior of electronic medical record system was 77.6%. Perceived usefulness had a positive impact on doctors' indirect system use behavior, perceived ease of use had a negative impact on indirect system use behavior, perceived risk had no significant impact on indirect system use behavior, and indirect system use behavior had a positive impact on doctors' task performance and doctor-patient communication quality, The strength of the relationship positively regulates the relationship between the use of indirect systems and the performance of doctors' tasks and the quality of doctor-patient communication. Based on the above research results, the author believes that hospital managers should understand the rationality of doctors' indirect use behavior, establish an indirect system use system, strengthen the construction of hospital trust culture, standardize doctors' indirect use behavior, and optimize the operation and function of electronic medical record system.