Abstract:Objective：To observe the effect of human-computer dialogue teaching and examination system for ultrasound residents under the guidance of post competence in standardized clinical training. Methods：Thirty resident physicians who received standardized training in ultrasound medicine from 2014 to 2021 in children’s hospital of Nanjing Medical University were selected，the experimental group was the standardized training course for 2018 to 2021 16 resident physicians. The human-computer dialogue teaching and examination system model was adopted. The control group wasfrom2014 to 2017，14 resident physicians，using traditional teaching methods. The difference between the two group of post-training test scores was compared，and the questionnaire survey was conducted among all students. Results：The theoretical score around the first stage was no significant between experimental group and the control group（86.1±4.3 points vs. 83.8±4.2 points；t=1.625，P > 0.05）. The performance of the experimental group either the theoretical scores and operation scores around second stage were better than the control group（93.8±2.3 vs. 88.2±2.9 t=4.985，P＜0.05；94.6±1.5 vs. 89.9±1.4 t=9.358，P＜0.05）. The questionnaire survey shows that the construction of human-computer dialogue teaching and examination system has higher degree of satisfaction in course design and teaching method. Conclusion：The establishment of human-computer dialogue teaching and examination system was suitable for the standardized training of residents in ultrasound medicine，and can effectively improve the post competence.