The computerized imitating system constructed by the Second Affiliated Hospital of Guangzhou Medical University contains four blocks： administration of student information， adminis-tration of question bank， on-line tests and administration of score inquiry. It's designed to imitate typ-ical pediatric cases， so that the medical students may put themselves into the “practical” clinical sce-nario and solve the challenges step by step in one-direction procedure. Teaching with computerized clinical scenario imitating patients can improve students' test results and activate students' learning enthusiasm significantly. It not only helps to solve the contradiction between increasing number of medical students and clinical typical teaching case shortage but also improves the clinical thinking ability of the medical students. This system can also be used as a test bank for pediatric technical skills examination.