There are several reasons for the skin on the soles of the feet: 1. Ordinary type psoriasis: mainly due to polygenic dominant inheritance, in addition to genetic factors may also have a certain relationship with trauma, infection or smoking and other factors. If the patient combined with vitiligo or dermatomyositis and other connective tissue diseases, immune system disorders, can also lead to the combined occurrence of psoriasis. 2, eczema: mainly occurs in the chafing eczema, skin at the same time there can be a symmetrical distribution of rashes, the boundaries of the manifestations of the unclear. Mainly due to contact with rubber, plastic or additives and other chemicals lead to allergic reactions, in the clinical treatment needs to be anti-allergic treatment.