In view of the test requirements, test conditions and the deficiencies of existing projectile motion parameters measurement methods of airborne weapons projection test in flight test, an accurate measurement method of projectile motion parameters based on three-dimensional model was proposed. Firstly, the method, principle and system composition of accurate measurement of projectile motion parameters based on three-dimensional model were briefly discussed. Then, the methods of high precision geometry and texture modeling, automatic registration of three-dimensional model and dynamic sequence image, automatic point finding, turning point tracking and high precision pose and attitude solving were discussed in detail. Finally, a ground test verification system was constructed, and the verification tests for the accuracy of static measurement data and the effective reliability of dynamic measurement data were carried out. The test results show that the proposed method effectively improves the measurement accuracy and reliability, and realizes the three-dimensional reproduction of the motion process based on the projectile body model.