Background:General practitioner (GP) preceptors play an important role in the cultivation of GPs.Many problems exist in the training of GP preceptors.This study aimed to explore the willingness and training needs of GP preceptors and compare the differences between preceptors from general practice and other specialties.Methods:A total of 375 questionnaire forms were sent to 375 GP preceptors from 11 different provinces,and 344 completed forms were reted.The main outcome included general information,teaching motivations,and training needs of GP preceptors.Results:The study showed that about 89.2％ of GP preceptors were willing to be teachers.The majority of respondents strongly agreed that the motivation for becoming a GP supervisor was to le from teaching.The most important capability they should master was clinical teaching (92.2％),followed by lecture (83.1％) and doctor-patient communication (83.1％).The top three preferred methods of GP preceptors training were case discussion (78.8％),workshop (57.6％),and classroom teaching (56.4％).The domains in which most GP preceptors wanted to acquire knowledge and skill were mental health (59.3％),rehabilitation (47.1％),pediatrics (41.0％),and obstetrics (37.5％).No significant differences were found in the willingness to train GPs (x2 =3.34,P ＞ 0.05) and whether they would become or continue to become a GP supervisor after the training (x2 =l.106,P ＞ 0.05).Conclusions:Although most preceptors were under on-the-job training,they were glad to train GPs.To be qualified,preceptors should be trained according to the actual needs of GP preceptors.