Abstract: Take the boschiniakia glabra of Inner Mongolian Dengkou County as experimental material.based on field investigation method.Research boschiniakia glabra inflorescence vegetal period,the relation between environmental conditions of a free air temperature,soil temperature and soil moisture content with the boschiniakia glabra inflorescence.The result indicated,The boschiniakia glabra inflorescence＇s growth have the close relation with the temperature and the soil temperature Generally the free air temperature is in 20～30℃,the soil temperature is in 15～20℃,the suitable soil volume water content is in 3%～4%,the growth speed may reach 2～3cm/d in fastest speed.When the soil volume water content surpasses 8%,the plant began to rot.