Abstract: Cerebral palsy is a kind of substantial brain damage caused by various factors, with multiple complications. Focusing on the medical correction process of abnormal gaits of patients, especially foot varus and valgus when patients walking, a set of data collection and processing system is designed based on the control of STM32 embedded microcomputer. ESP8266 WIFI block establishes pass-through communication with the host computer, and MPU6050 6-axis sensor and RFP602 Membrane pressure sensor are adopted for data collection. By obtaining Euler angles through quaternion method and force of the three main support points on the foot, the system counts and analyzes the gait of patients, and alerts user to the abnormal gaits, then uploads data to the database of hospital.