Standardized residency training is one of the important contents of modern clinical doctor training and it is ex-tremely important for improving the quality of clinician and medical treatment.Mentors play an important role in the standardized residency training programs,who guaranteed qualified and homogeneous training for the residents.Double-mentor system had been carried out in standardized residency programs of the First People's Hospital of Kunshan city,which appeared to be valuable assets for improving the comprehensive quality and professional level of residential training guidance and resident trainees,so as to help medical students transform from students to qualified and excellent clinical physicians after graduation.Double-mentor sys-tem can also improve the tutor's own teaching ability and the efficiency of training,it is valuable for improving the level of clini-cal medicine,expanding the teaching staff of dual tutors and the teaching quality of comprehensive hospitals,which has a two-way strategy of mutual learning between teaching and learning.However,this system still needs improvement,and there are some lim-itations that need further exploration.For examples,the selection criteria for mentors needs to be formulated and reviewed more reasonably,responsibility and quality control of mentors are not perfect,the guidance and quality control of resident trainees need to be strengthened,and standardized evaluation system needs to be established.

Standardized residency training is one of the important contents of modern clinical doctor training and it is ex-tremely important for improving the quality of clinician and medical treatment.Mentors play an important role in the standardized residency training programs,who guaranteed qualified and homogeneous training for the residents.Double-mentor system had been carried out in standardized residency programs of the First People's Hospital of Kunshan city,which appeared to be valuable assets for improving the comprehensive quality and professional level of residential training guidance and resident trainees,so as to help medical students transform from students to qualified and excellent clinical physicians after graduation.Double-mentor sys-tem can also improve the tutor's own teaching ability and the efficiency of training,it is valuable for improving the level of clini-cal medicine,expanding the teaching staff of dual tutors and the teaching quality of comprehensive hospitals,which has a two-way strategy of mutual learning between teaching and learning.However,this system still needs improvement,and there are some lim-itations that need further exploration.For examples,the selection criteria for mentors needs to be formulated and reviewed more reasonably,responsibility and quality control of mentors are not perfect,the guidance and quality control of resident trainees need to be strengthened,and standardized evaluation system needs to be established.