Microscopic studies of seven kinds of soybean were performed on the sections obtained from dried beans without pretreatments with water and chemicals. Comparing with the usual paraffin method, by the present method less effects of water, germination and chemicals on preparated samples should be expected. 1) In the sagittal section remarkable construction was observed along long axis and constructed cells showed jigsaw puzzle figure. 2) Starch granule clusters were found more densely in the area, at which tow cotyledons contact each other, than in the outer region cotyledon. 3) There were difference in the size of starch granule cluster among different kinds of soybeans.