Objective　To evaluate the effect of PACS system (picture archiving and communication system) in the standardized residency training of cardiovascular medicine. Methods　Fifty-nine residents taking the standardized residency training of cardiovascular medicine in Changhai Hospital from 2018 to 2019 were randomly divided into PACS teaching group (n = 30) and traditional teaching group (n = 29). The research group adopted the PACS system for the teaching of cardiovascular medicine

and the control group took the traditional teaching method. The teaching effect was evaluated by theoretical examination

imaging examination and questionnaire. SPSS 19.0 was used for t test and chi-square test. Results　The theoretical and film reading scores of the PACS teaching group were significantly higher than those of the control group [(87.70 ± 6.52) vs. (80.55 ± 8.63); (86.67 ± 6.33) vs. (77.48 ± 10.29)

P < 0.05)]. The results of the questionnaire showed that PACS teaching method was helpful for residents to master cardiovascular knowledge

arouse their learning interest and improve their clinical thinking ability. The satisfaction with the teaching method in the PACS teaching group was significantly higher than that in the traditional teaching group [(9.22 ± 0.44) vs. (8.26 ± 0.72)

P < 0.05]. Conclusion　The application of PACS system in the teaching of cardiovascular medicine can significantly improve the teaching effect of residents.