Abstract: The cascade control lawis introduced in the monitoring system of the higher education teaching quality,where the cascade control histogram is constructed and the security monitoring system of cascade closed-loop negative feedback is formed Each college plays a minor role in the supervision of the teaching quality while the university plays a major role in the supervision of the teaching quality.Teachers are objects to be monitored,and students are products to be exported.The two-level management system between the university and college is organically combined,controlling teaching quality automatically according to the law by altering the PID factor of main-adjustment and sub-adjustment.This paper analyzes the influence of teaching environment and students on transition process of monitoring system of teaching quality.