There are more reasons for the yellowing of the foot plate, first of all, we should exclude the color loss of shoes and socks, so that the temporary staining of the soles of the feet, resulting in yellowing of the soles of the feet. In addition, there may be disease factors, such as calluses, palmoplantar keratosis, jaundice, etc., should be examined at the hospital, according to the results of the treatment of the cause. 1, calluses: commonly known as calluses, is the long-term pressure and friction of the skin caused by the keratin layer thickening, mostly occurring in the palms of the hands, soles, manifested as waxy yellow or yellow thickened plaques, flattened or slightly elevated. It is usually caused by the patient wearing ill-fitting, uncomfortable or wrong-sized shoes for a long time, which compress the foot, or wearing high-heeled shoes for a long time, resulting in friction on the bottom of the foot. Patients usually have no conscious symptoms, and severe cases may be painful, which usually does not require treatment and can be relieved by reducing friction. If the keratin layer is too thick and hard, which seriously affects daily life, it can be surgically eliminated after local application of keratin exfoliators or softening; 2. Palmoplantar keratosis: Patients with palmoplantar keratosis have thickened and hyperkeratotic skin, and in some categories of patients with palmoplantar keratosis, diffuse, patchy keratinous thickened areas with smooth, yellow surfaces can appear on the soles of the feet; 3. Jaundice: Due to impaired bilirubin metabolism causing intra-serum bilirubin The concentration of bilirubin increases, resulting in yellow staining of the sclera, skin, mucous membranes, as well as other tissues and body fluids, and some patients may show yellowing on the soles of the feet, which should be promptly seen by a hospital to clarify the cause of jaundice and facilitate targeted treatment; 4, hypercarotenemia: this disease is a disease caused by excessive carotene content in the blood, characterized by yellow staining of the skin, which occurs on the soles of the feet with a thick keratin layer, probably due to the intake of large amounts of It may be caused by the intake of a large amount of carotenoid-rich food, which does not require special treatment, as long as such food is not eaten, the symptoms will disappear after a few days. If the symptoms are caused by underlying diseases such as hypothyroidism, diabetes, nephrotic syndrome, etc., resulting in impaired metabolism of carotenoids, treatment is needed for the underlying diseases. 5. Weakness: Insufficient qi and blood may also cause yellowing of the soles of the feet, which can be treated with Guei Spleen Pill and Pat Chun Tang.