WiFi 电磁波的穿墙能力直接影响通信的效果和质量.结合砖墙的电磁特征，理论分析了WiFi 电磁波在砖墙中的传 播特性，推导出了WiFi 电磁波穿墙厚度与平均功率流密度的关系式，给出能量传输实例及图像.结果表明: WiFi 电磁波能穿透 砖墙，穿透过程中信号能量逐渐衰减，但是衰减较小.因此，砖墙对WiFi 通信连接的阻碍作用并不大.

WiFi electromagnetic wave penetration wall capability influences directly the effect and quality of communication. Combining electromagnetic characteristics of brick wall，we analyze theoretically the propagation characteristics of WiFi electromagnetic wave in the brick wall， the relationship between derived WiFi electromagnetic wave through the wall thickness and average power flow density. Examples and images of rgy transfer are given. Results show that WiFi electromagnetic waves can penetrate brick wall. In the process of transmission，the signal energy is gradually attenuationbutless attenuation. Therefore，the brick wall has little impediment of WiFi communication connection.