讨论低椭圆轨道移动卫星通信系统的星座设计问题，提出了星座中各卫星高度不断变化时，卫星群相位的优化设计方法。本文设计的覆盖我国的低椭圆轨道系统星座有二个方案：第一个方案是由１２颗低椭圆轨道卫星（远地点为２９０６ｋｍ而近地点为４２７ｋｍ）组成；第二个方案为弥补系统对低纬度地区覆盖率低的缺陷，而增加四颗赤道平面中轨道卫星，提供对我目的连续覆盖。 The constellation design of low-elliptical orbit mobile satellite communication system is discussed, and the optimal design method for the phase of satellite constellation is proposed when the satellite heights in the constellation constantly change. In this paper, there are two schemes for low-elliptical orbit system constellations covering China. The first scheme is composed of 12 low-elliptical orbit satellites (2906km from apogee and 427km from apogee). The second scheme is to make up for the low latitude regions Low defect coverage, and adding four orbital satellites in orbit, providing continuous coverage for my purposes.