Abstract: In this paper,the significance and problems of comprehensive experimental reform was summarized and the reform content of metal materials engineering was proposed.Through the reform in teaching syllabus,teaching content,assessment mechanism,experimental plan and counterexample teaching application,the newly designed professional comprehensive experiment is no longer a patchwork and accumulation of basic content.It optimizes and integrates the original isolated and scattered experimental content and operates in the form of projects.And the new comprehensive experiment was carried out in project form.Besides,the students' practical ability,active thinking ability and engineering practice ability were improved.