If a patient has hand tremors when serving a cup, the causes may be the following: 1. If the patient is accompanied by panic, palpitations and sweating, consider it to be caused by hypoglycemia. 2. If the patient simply has hand tremors, it may be caused by idiopathic tremor disease, pay attention to whether the patient has a family history of idiopathic tremor. This disease is a benign tremor, mostly when the patient is emotionally tense, excited hand shaking more obvious, when the patient is holding something will also hand shaking more obvious. 3, the patient if the end of the cup hand shaking, while the patient’s fingers show rubbing pill-like changes, there are muscle tone disorders, gait retardation and other problems, considered to be caused by Parkinson’s disease in the elderly. Patients should consult a neurology or Parkinson’s disease clinic for examination and treatment.