It is of great significance to study the effect of levels of irrigation on spring soybean plant height and yield. Frame experiment was adopted with three different types of soybean varieties as materials and set up three levels of irrigation. The results showed that soil water content、the soybean plant height and yield were increased with the increase of levels of irrigation. But there were obvious differences between three varieties. The plant height of T120in Suinong14 and Nenfeng18 was obviously higher t...