Sweating on the palms of the hands and the soles of the feet can be caused by a variety of reasons, the most common being yin deficiency and hyperactivity (deficiency of yin fluids and hyperactivity of yang qi), in addition to a number of other etiologic factors. Sweating in the palms of the hands and feet belongs to the category of sweating according to the theory of Chinese medicine, which is mainly manifested by sweating in the palms of the hands and feet more than normal. The most common cause of abnormal sweating in the palms and feet is yin deficiency and hyperactivity of yang. In addition, internal depression of yang qi, dampness obstruction in the middle jiao, heat fumigation in the yin meridian, dryness and heat in the yangmings (dryness and heat evil qi accumulating in the body), and abnormal transportation of the spleen leading to fluid reaching the limbs can also lead to abnormal sweating in the palms and feet. Abnormalities of the palms and soles can be caused by a variety of reasons and need to be identified and treated according to the specific accompanying symptoms. It is recommended that patients with symptoms such as abnormal sweating in the palms of the hands and feet go to a regular hospital for consultation and appropriate treatment under the guidance of a professional doctor, so as to avoid delaying the condition.