Abstract: This paper analyzes the GPS power enhancement in the US-Iranian conflict in June 2019, and analyzes the power enhancement of GPS P(Y) code from receiver type, antenna type and satellite model. The analysis shows that the power enhancement values of the stations of different types of receivers are significantly different, while the power enhancement values of the stations using different types of antennas are not much different. In addition, in the case of the same receiver or antenna type, the same type of satellite power enhancement value comparison results of the same group of co-locaion-stations are consistent.