Abstract: In view of the increasingly vicious UAV “black flight” phenomenon, and considering that its satellite navigation terminal will be loaded with multi-array adaptive zeroing anti-jamming antenna to improve the use of navigation resources, the advantages of using satellite navigation jamming for UAV defense are analyzed, and a satellite navigation jamming method for UAV defense is explored. The implementation strategy of navigation jamming from single interference source to multi-interference source is described, and the evaluation index is given. It helps protection personnel to accurately explore effective defense boundaries, determine weak areas, optimize interference source deployment strategies, and improve protection efficiency. A defense effect evaluation software is developed, which can present the defense situation and make the defense effect display more intuitive.