Abstract: Objective To investigate the current situation and correlation of organizational support,psychological capital and job involvement of vocational college teachers,and to provide reference for vocational colleges to carry out teacher team reform. Methods From September to December 2023,a convenience sampling method was used to survey 282 teachers from 5 vocational colleges in Sichuan Province using a general information questionnaire,organizational support scale,psychological capital scale,and job involvement scale,and the data were analyzed. Results The score of organizational support for vocational college teachers was （3.36±0.39）points,the score of psychological capital was （4.10±0.49）points,and the score of job involvement was （3.52±0.54）points,and there was a positive correlation among the three factors（r=0.943,0.884,0.898,all P<0.01）. Organizational support and psychological capital had a direct positive effect on teachers' job involvement,and psychological capital had a partial mediating effect between organizational support and job involvement（18.05%）. Conclusion The organizational support,psychological capital and job involvement of vocational college teachers are at the medium level,and psychological capital and organizational support have positive effects on teachers' job involvement. Vocational colleges should further strengthen the organizational support and psychological capital investment level for teachers,enhance their sense of professional value and mission,and promote the continuous improvement of vocational education and teaching quality.

Key words: Higher vocational colleges, Teacher, Psychological capital, Organizational support, Job involvement, Correlation