Popping skin on the soles of the feet can be caused by physiologic and pathologic factors. Common pathologic factors include: psoriasis, tinea pedis, foot eczema and so on. 1. Physiological factors: such as long walking friction, shoes do not fit, etc., resulting in foot skin stimulation after the skin metabolism accelerated, which in turn caused the phenomenon of foot skin burst. 2. Ordinary psoriasis: a chronic inflammatory disease related to immunity. The initial lesions are red papules or macules, gradually expanding into clearly defined red plaques, covered with thick layers of silvery-white scales, if the feet appear in this disease, it will cause the heart of the feet burst skin. 3. Tinea pedis: usually caused by fungal infections of the feet. Scaly keratinized type occurs in the palm and metatarsal part and heel, is diffuse skin roughness, thickening, flaking, cracking, dry, and then appeared in the heart of the foot burst skin, and accompanied by obvious itching symptoms. 4. Foot eczema: usually caused by contact with allergens. It can lead to skin keratinization cracking, which in turn causes the skin of the feet, and will be accompanied by itching symptoms. The cause of the heart of the feet more reasons, it is recommended that timely medical treatment, follow the doctor’s instructions for treatment.