Hydrometeors (cloud, rain, and fog) being the most predominant atmospheric phenomena, can produce additional attenuation and depolarization effect on radio wave, considerably effecting the performance of a satellite communication system operating at 10 GHz and above. Rain attenuation that fails to greatly affect the communication of C-band satellite may interrupt the communication of Ku-band satellite. Cloud attenuation that rarely affects the Ku-band may influence the Ka-band seriously. Rain may produce even more acute attenuation for Ka-band than for Ku-band; similarly, rainstorms can induce signal attenuation up to tens of dB, causing signal interruption. Scattering of rain drops and ice layer may cause similar frequency interference between the ground and the earth-space links, triggering a decrease in cross-polarization discrimination (XPD) or resolution of the cross-polarization resolution for multiplexing frequency system and additional delay of signal. Radio wave propagation of hydrometeors forms a complex random process, and its propagation characteristics are dependent on frequency, meteorological conditions, geographic position, and climatic regions. Reliable predicting of hydrometeor effects is the essential foundation for the link design of a satellite system as well as its functioning competency under various bad propagation conditions.