Objective：To evaluate the effect of 3D printed skeletal model in orthopedic clinical internship teaching. Methods：From october 2015 to october 2016，30 undergraduate clinical medical internship students were divided into traditional teaching group and 3D model teaching group randomly. 1 teaching ward round was conducted for each student. Teaching rounds are conducted according to routine procedures in traditional teaching group，while the 3D model teaching group uses the patient's 3D print skeletal model to assist in teaching rounds and perform simulated surgery. All students were tested in theory and practice

and the teaching evaluation was carried out by questionnaire. Data were imputed into SPSS 19.0 for comparision between the two groups using t-test.Results：Students in 3D model teaching group significantly outperformed than those in traditional teaching group in theoretical achievement（92.27±4.56 vs 86.87±5.30） and practical achievement（90.07±4.61 vs 82.53±5.03）(P<0.01).In respects of promoting theoretical knowledge

enhancing surgical participation

hands-on ability exercise

teaching attraction and overall satisfaction，students in 3D model teaching group gave a better evaluation of teaching they had received than those in the traditional teaching group(P<0.01).Conclusion：3D printed skeletal model is an effective teaching tool

and its application in clinical internship teaching at basic-level hospital can significantly improve teaching effectiveness and satisfaction. It is worth further exploration and promotion.