Abstract: In summer pods without peas in soybean block the development of soybeans production in ecotype region of Huang-Huai Plain. To solve the problem, we have made a series of research with great concentration for more than ten years. Finally we understood its mechanism basically and formed a set of Tried and true preventive measures. These measures are brought into application and dissemination. Now the result shows that: pods without peas in soybean are basically divided into three types: bushy stunt , excessive growth of branches and leaves , the upper midst. This is mainly because the lack of boron, resulting in physiological disease. According to the correlation analysis, there is an obvious inverse correlation between the effective boron content in soil and individual seedless pods(r=-0.4628*), while it is more obvious between the boron content in pods and individual seedless pods(r=-0.7597**). No matter what kind of soil, its effective boron content has notable positive correlation with that of seeds(r=0.8295**). Here are the environmental factors: lacking of boron, immediate planting after crops, unjustified fertilizers, climatic conditions ,causes of seeds ,etc. The main preventive measures are as follows: ①.Addition of boron fertilizers. ② .Reasonable irrigation and drainage. ③. Choices of good seeds for different kind of soil. ④. Proper rotatation after crops ⑤ Application of plant growth regulator. ⑥. Optimization of fertilizer means, and wholly integrated pest control etc.