Abstract: The anti-spoofing technology of BDS is related to the (UAV) patrol efficiency. This paper studies the anti spoofing technology of BDS (BeiDou Navigation Satellite System) under the condition of UAV patrol.Firstly, for the high dynamics of UAV (unmanned aerial vehicles) patrol, this paper introduces the particle filter model to improve the positioning and velocity estimation performance of UAV. Furthermore, an anti-spoofing strategy is constructed accroding to the feature of satellite spoofing, which consists of signal detection and identification. By simulating UAV patrol and spoofing environment, the experimental results show that: (1) under the condition of the dynamic UAV, the positioning and velocity measurement performance based on particle filter model is significantly improved compared with the traditional least square method. (2) The anti-spoofing strategy of UAV patrol designed in this paper effectively suppresses and reduces the influence of spoofing signal on UAV positioning, and then improves the reliability of UAV patrol.