Objective　To develop an innovational hybrid simulation-based education of bone traction with co-Debriefer for medical students and to evaluate its effectiveness. Methods　This study was designed as a cross-controlled study. From June 2018 to June 2019

28 medical students were randomized into two groups. The two groups adopted simulation-based education and traditional teaching method respectively. In the second week of internship

the teaching methods of the two groups exchanged. Scores rating of the skill were used to assess the students' performance in the end of each teaching methods. SPSS 23.0 software was used to analyze the collected data. Results　In the first weekend of orthopedic-internship

students in the experimental group scored significantly higher than the control group

with an average score of 85.07 points versus 67.92 points. In the second weekend of practice

there was no obvious change in the skill score of the experimental group

but the score of the control group was significantly improved

and there was no obvious difference with the experimental group. Conclusion　The hybrid simulation-based education with co-debriefing is a reliable teaching method for medical interns to learn skills of bone traction

which can effectively help improve students' skills

reduce their errors

and ensure patient's safety.