There is not enough time. The requirement of continuing education for primary and secondary school teachers is not how many points, but the hours of continuing education, which requires primary and secondary school teachers to achieve the task of 130 hours or more every year, so enough credits can not meet the standard. Credit system is an educational model, which is a comprehensive teaching management system with course selection as the core and teacher guidance as the auxiliary, and the quality and quantity of students' learning are measured by grade points and credits.