Abstract: In order to study the reason of the short husk variety in the process of maize inbred lines from microscopic perspective, the vascular bundle characteristic in the cob and the husk were measured by using different varieties of the maize, including the short husk variety of 139 and the contrast variety of No.1.The result showed the responses of the different types were different in the areas of the vascular bundle in the cob and husk .The single vascular bundle in the husk in 139 were larger than the contrasts ,but the numbers of the vascular bundle of 139 were less than the contrast’s .As for the cob ,the vascular bundle areas of 139 were smaller than No.1’s,but the vasculars bundle number of 139 were larger than that of No.1 .In the end ,we analysed the abnormal development causes of the husk and cob from the organic nutrition transportation respect.