Hand shaking may be caused by idiopathic tremor, hyperthyroidism, Parkinson’s disease and other diseases. 1. Idiopathic tremor: it is an autosomal dominant disease, mainly manifested as involuntary tremor of the upper limbs, hands and face, which is obvious when nervous and disappears during sleep. 2. Hyperthyroidism: It is a thyrotoxicosis caused by excessive production of thyroxine by the thyroid gland itself. Patients mainly show symptoms such as weight loss, hand tremor and thick neck. 3. Parkinson’s disease: a degenerative disease of the nervous system that is common in middle-aged and old-aged people, the cause of which is mostly related to genetics, environment and aging of the nervous system. Patients mainly manifested as static tremor, muscle tonus and other symptoms, the tremor usually starts from one side of the limbs. There are many causes of hand tremor, it is recommended that patients seek timely medical treatment, standardized treatment under the guidance of the doctor.