When a person is nervous or hot, the palms may sweat slightly, which is a normal physiological phenomenon in the human body. However, some people’s hands are always wet, will be sweaty palms to soaked test papers, damage to the mouse keyboard, and even when eating sweat along the fingertips dripping into the bowl, if you encounter such a situation, you have to be careful, this may be caused by hand sweating syndrome. Hand sweating for a common unknown cause of functional local abnormal sweating disease, is a congenital disease. Human sweat gland secretion is controlled by the sympathetic nerve, under normal circumstances, the sympathetic nerve through the control of sweating to dissipate heat and regulate the body temperature, while the sweating of patients with hand sweating, the sympathetic nerve is completely out of control. At present, the cause of hand sweating is still unclear, from an anatomical point of view, it is due to the sympathetic nerve excitation, local sweat gland secretion is too exuberant caused by, for example, nervousness, excitement, stress, or high temperature in the summer, will cause the palm of the hand sweating abnormal. The degree of sweating in the palms of normal people may be a “flood” in the hands of people suffering from hand sweating. Hand sweating is categorized as primary and secondary. Primary hand sweating refers to excessive sweating of the palms of the hands that occurs in the absence of obvious organic lesions, and most hand sweating is primary. Secondary hand sweating is usually caused by other diseases, such as endocrine disorders, tuberculosis, hyperthyroidism, mental illness, etc., but this condition is also a minority of hand sweating. In their daily lives, people with hand sweating may accidentally wet their examination papers, resulting in blurred handwriting and affecting their grades; they also usually do not dare to hold hands or shake hands with others for fear of the other party’s strange looks; moreover, the palms of their hands are prone to peeling and cracking due to the prolonged dampness, which is itchy and painful, and thus they are unable to engage in types of work that require fine work on the hands. Although hand sweating is not a serious disease, it brings a lot of inconvenience to people’s lives, causing work and social disturbances. Moreover, most people with sweaty hands have the condition since childhood, which may cause great stress to the sensitive heart of the child, and even in adulthood, the child may easily fall into a helpless and agitated mood when faced with the problem, and his/her self-confidence may be undermined. Therefore, there is a need to treat hand sweating. According to the amount of sweat and the degree of impact on the patient’s life, hand sweating is categorized into three levels: mild hand sweating is slightly moist palms, moderate hand sweating can soak a handkerchief, and sweat on the hands of patients with severe cases will flow downward drop by drop. Many people mistakenly think that they should see a dermatologist for hand sweating, and they don’t even know which department to see. In fact, since the culprit of hand sweating lies in the thoracic sympathetic nerves, patients with hand sweating can be seen in the thoracic surgery department. Therefore, instead of starting with the hands, the treatment for hand sweating also begins with surgery in the thoracic region, where the sympathetic nerve chain in the chest is surgically severed.