Abstract: The electromagnetic environment and electromagnetic wave propagation of city district which buildings arranged in irregular as the object of study,we numerical studied the influence of different antenna height,different building material imposed on the path loss of electromagnetic wave propagation in viewing area and predicted the electromagnetic power distribution in the area of 1.5 meters from the ground through the application of ray tracing technique and based on the example of Xidian University southwest corner in this paper.the result showed that the influence of different building material to the path loss of electromagnetic wave propagation was similar,but the path loss of electromagnetic wave propagation was different with different antenna height and the electromagnetic power of the each reception point varied with the distance from the source point in the area of 1.5 meters from the ground.