Abstract: Objective Evaluation the effect to improve the eight-year program medical students' comprehensive ability between standard of PBL teaching mode and complex scenarios PBL teaching mode .Methods To comparative improved medical teaching effect between complex scenarios PBL teaching mode and standard of the PBL teaching mode by using the final exam scores and DREEM scale. Results The complex scenarios PBL teaching mode improve the ability of problem solving score significantly higher than the standard scores of PBL teaching mode at the start of analyzing questions and help students to stimulate interest, increase self-confidence, (p < 0.05). Comparative analysis shows the comprehensive thinking ability of medical students has improved significantly. Conclusions Complex scenarios PBL teaching mode can more improve the ability of handling the students' study enthusiasm, comprehensive ability and strain capacity than that of standard PBL teaching mode. The obvious effect is worth promoting.

Key words: 【Key words】complex scene PBL teaching method, Comprehensive thinking ability, Teaching mode, evaluation