Objective　To meet the individualized needs of residents in standardized residency training of cardiac intervention specialty for cardiac ultrasound teaching

to construct a bionic 3D printing model of ultrasound source

and to discuss its application value in ultrasound teaching and simulation exercises. Methods　Sixty residents majored in cardiovascular medicine receiving standardized residency training of ultrasound in ultrasound imaging department of Renmin Hospital of Wuhan University were randomized into experimental group and control group in average. The experimental group adopted ultrasound bionic 3D printing heart model combined with problem-based learning (PBL) teaching method

and the control group adopted traditional multimedia PPT combined with PBL teaching method. At the end of teaching activities

theoretical examination

operation assessment and questionnaire survey were conducted to evaluate and compare the teaching effect between the two groups. SPSS 21.0 software was performed for t test. Results　The theoretical examination scores of the experimental group and the control group were (81.4±8.2) points and (74.8±9.4) points

respectively

P=0.002

and the operation assessment scores were (89.1±5.6) points and (71.5±8.8) points

respectively

P<0.001. The questionnaire survey showed that the experimental group had better feedbacks than the control group in the aspects of mastery of heart anatomy knowledge

learning experience

learning interest

learning efficiency

understanding of interventional heart disease

clinical skills of interventional operation and overall satisfaction (all P<0.05). Conclusions　Ultrasound bionic 3D printing combined with PBL teaching method can help strengthen the mastery of cardiac anatomy knowledge

promote the learning experience of cardiac ultrasound and improve the skills of interventional operation. The teaching effect is significant and the students' satisfaction is high.