In general, the soles of the feet are very itchy skin thickening hard white may be due to cleaning is not in place, tinea pedis, keratosis pilaris eczema, etc., according to the clinical manifestations of specific analysis. 1. Cleaning is not in place: when the climate is dry, usually do not often wash the feet, will cause the loss of skin moisture, and there is a lot of dirt, making the soles of the feet appear dry and hard phenomenon, can be accompanied by gray-white color changes. 2. Tinea pedis: it is caused by fungal infection, which can cause itchy skin. If it is scaly keratinized tinea pedis, it can make the skin of the foot appear diffuse thickening and thickening, resulting in dryness and flaking, and the soles of the feet will be hard, dry and whitish. 3. Keratosis pilaris: It mostly occurs on the palms of the hands and feet, with bilaterally symmetrical skin hardening and keratinization. The disease can lead to significant thickening of the stratum corneum, so that the soles of the feet skin is dry and hard, and there is a slight whitening of the performance, and some will be cracked, bleeding. In addition, the soles of the feet are very itchy skin thickening hard whitening can also be seen in other diseases, it is recommended that patients go to the hospital in a timely manner to avoid delaying the condition.