In order to ensure the quality of UAV, the reliability acceptance method is studied. According to the statistical characteristics of UAV reliability testing, the mission reliability model and the basic reliability model of UAV are established; by the short-term and high-risk time terminated testing program of Reliability testing for qualification and production acceptance, the failure of UAV is defined, the numerical value of UAV environmental factors are established; and the acceptance methods of UAV mission reliability and basic reliability are provided. Then this method is applied to the reliability acceptance testing of certain type UAV. The test results show that the method has some reference value to the reliability acceptance of UAV products.