Hand shaking is generally divided into physiological and pathological, thirty-year-old hand shaking physiological reasons are mostly emotional excitement, overwork, etc., pathological reasons may be hyperthyroidism, hepatomegaly. Thirty-year-old young people, if in the excitement, anger, overwork, nervousness, fear after the hand shaking, or hold things unstable, or even hold things, this is a physiological hand shaking, is a normal phenomenon, do not have to worry too much. After eliminating the physiological factors still appear hand shaking, if the patient’s hand shaking to the hands of the fine tremor of the main, may be hyperthyroidism. If the patient has abnormalities in the liver in addition to the involuntary shaking of the hands, it may be hepatomegaly. If a thirty-year-old patient develops the symptom of hand shaking, after excluding physiological factors, he should consult a doctor in time and get treatment as early as possible to avoid aggravation of the condition and adverse consequences.