Objective To analyze the final assessment results and related factors of standardized residency training in four training bases in Beijing and to propose suggestions for future improvement. Methods From September to November 2023, the final assessment results of 1007 resident physicians in clinical medicine and dentistry who entered the 4 training bases from 2018 to 2022 were enrolled. Basic information and results of proficiency tests, the final assessment results and related factors were collected and analyzed using methods such as χ² test, logistic regression, and ROC curve. Results From 2020 to 2023, 864(85.8%) of the 1007 residents passed the final assessment for the first time, of which 915(90.9%) and 949(94.2%) passed the knowledge assessment and the practice assessment, respectively. Logistic regression analysis results show that the final examination pass rates for the surgery major(OR=3.92, 95% CI: 1.77～8.68), internal medicine and neurology major(OR=3.54, 95% CI: 1.77～7.06), and medical imaging major(OR=3.64, 95% CI: 1.69～7.85)were lower than those for “other” majors. Doctoral graduate students(OR=0.35, 95% CI: 0.20～0.63) have a higher final examination pass rate than undergraduate students. The higher the national percentile score in the annual clinic competency test (OR=0.96, 95% CI: 0.96～0.98), the higher the final examination pass rate. Conclusions The pass rate of final assessment in standardized residency training in our study was not high, the related factors were educational background, training major, and the national percentile of the annual clinic competency test. Residency training bases should develop training programs based on the individual characteristics of resident physicians to meet the requirements for standardized training.