Abstract: Objective To describe the knowledge of ultrasound examination for resident physicians. Methods A? cross-sectional study was conducted among 105 resident physicians working at 4 clinical departments of Peking Union Medical College Hospital in December 2014. The contents of the investigation included the cognition of ultrasound examination ，the communication with ultrasound physicians and the role of ultrasound in clinical practice. Results A total of 100 valid questionnaires was gained. 81% of the resident physicians understood the ultrasound indications slightly or moderately, and the results were moderately or quite approved by 91% of residents. 70% of resident physicians had a slight or moderately understanding for bedside ultrasound indications.90% of the physicians thought that ultrasound is quite and extremely important in clinical work,while 59% have an overall medium satisfaction rate for the interpretation of ultrasound report. Conclusion Explicit the needs of clinicians and training targeted will benefit the use of ultrasound in clinical work.

Key words: Key words： ultrasound, resident physician, training, survey