This paper studies the autonomous navigation equipment of Quadcopter. SINS/GPS integrated navigation technology, ultrasonic ranging and barometric altimeter is used in the autonomous navigation system. Navigation board includes measuring height subsystem and measurement position subsystem. The former includes an inertial navigation module and GPS module using the Kalman filter for data fusion, which gets a more accurate and stable location information. Quadcopter height measurement subsystem, using ultrasound and barometers. Complementary filter for effective data fusion, is used to ensure the reliability of height measurement.