With the increasing importance of technology, education and science, coupled with the competition for talents, human capital has become the most important capital for future social development. Vigorously improving the level of higher vocational education has become a major part of the test of comprehensive national power. And this requires that higher vocational education must have a high level of college teachers to provide a fundamental guarantee for the development of higher vocational education. This study aimed to assess professional competency, professional identity, perceived organizational support of college teachers and will be the basis in developing effective career management framework. This study adopted descriptive correlation method to investigate the relationship between the variables, through the form of questionnaire, distributing and collecting the questionnaires to the respondents, and getting the relevant information and data of the respondents. The respondents were college teachers from five higher vocational colleges in Guizhou Province, totaling 456 people. The statistical software of SPSS version 28 was used for data processing, and a series of statistical methods such as Pearson's correlation coefficient method, one-way ANOVA, and independent samples t-test were used to analyze and interpret the variables and data, which further proved the relationship between professional competency, professional identity, and perceived organizational support. The results of the study showed that there is a highly significant relationship between professional competency, professional identity and perceived job support. Professional knowledge, personal traits, and professional attitudes all have a positive impact on professional competency, with professional knowledge having the greatest impact on professional competency, followed by professional attitudes and personal traits, and the differences between these three factors are not too great. For professional identity, work motivation, self-efficacy, and professional commitment all have a significant impact on professional identity. The greatest influence was on work motivation, followed by professional commitment, and the least influence was on self-efficacy. Job support, leadership, and organizational fairness influence perceived organizational support from different aspects of the three dimensions. Leadership and job support were the most influential factors followed Yang, L.