The cause of shaking hands after drinking alcohol is considered to be overexcitation of brain cells and nerves. Alcohol excites the cortical nerve cells and sympathetic nerves, while the cortical nerve cells and their conduction bundles have the function of directing the coordinated movement and contraction of muscles. When a large amount of alcohol can lead to excessive discharge of cortical brain cells and sympathetic nerve overexcitation, which can cause an increase in the frequency of muscle contraction, and the symptoms of involuntary hand shaking. When the symptoms of involuntary hand tremor after drinking alcohol, it is necessary to exclude the possibility of organic diseases, and it is recommended that the patient go to the neurology or sports medicine and other related departments as soon as possible to improve the relevant examinations to clarify the condition, so as to avoid delaying the condition.