Professional degree is a kind of degree with professional background, which has obvious professionalism and practicality. Professional degree graduates' learning purpose and learning needs are more explicit than academic degree ones, and their personality is more prominent. Investigating the degree category of professional degree graduates and the related knowledge of their professional field, analyzing the demand of knowledge structure and ability quality of the professional degree graduate education, some constructive suggestions were put forward by measuring the fitting degree between requirements of professional role and personality characteristics of professional degree graduates.