With the continuous development of the standardized training for resident doctors in our country,the concept of stratified teaching has been paid more and more attention.Being a multi-disciplinary professional base,there are great difficulties in the implementation of stratified and progressive teaching in internal medicine base.The standardized training base of internal medicine resident doctors of Shenzhen Hospital of the University of Hong Kong initially explored the hierarchical and progressive teaching method from seven basic links,It includes:student stratification,teacher stratification,rotation plan stratification,teaching objective stratification,teaching content stratification,assessment stratification and hierarchical feedback and evaluation.In practice,continuous improvement and improvement,step by step to implement hierarchical progressive teaching.After more than 2 years of continuous practice and plan-do-check-act cycle,The results are beginning to pay off.The enthusiasm of trainees and teachers has improved.The core competence and the passing rate of licensing examination,the national annual proficiency test and final tests of the trainees have all improved too.