As a multi-dimensional open culture and an organic composition of higher education, compared with other forms of education, college physical education has a unique advantage in the promotion of college students to form and develop good personalities. The factors of college physical education that impact college students’ personality developments are divided into two parts of promoting factors and impeding factors. Among them, promoting factors including teaching factors, management factors, and personnel support, etc., play an active role in promoting the process of college students’ personality developments; impeding factors including behind ideas and concepts, various course contents, monotonous teaching mode, rigid management mode and teachers to be improved, etc., seriously impede the progress of college students’ personality developments. College physical education has its impacts on the process of college students’ personality developments in its unique forms and methods, the roles of which are mainly represented in: promoting physical and mental healthy developments; coordinating interpersonal relationships to enhance adaptive capacities to the society; developing firm volitional qualities and magnificent moral sentiments; enhancing the struggling consciousness to participate in competitions and cooperation; and culturing innovative consciousnesses and innovative capacities, etc. aspects.