The shivering of the arms and legs is what is going on, and the shivering of the arms and legs is what we call tremor, mainly due to the following reasons: First, if there is a sudden acute onset of bilateral or unilateral shivering and tremor of the arms and legs, we should ask the patient whether there is weakness of the arms and legs, or whether there is numbness of the arms and legs, whether there is dizziness or headache, and first of all, we should do a cranial magnetic resonance examination to understand whether there is acute The first step is to do a cranial MRI to find out whether there is acute cerebrovascular disease, such as infarction or hemorrhage in the brain lobes. Second, if the shivering in the arms and legs is chronic and progressive, starting with one arm and leg and then progressing to the other arm and leg, mainly with resting tremor and shivering in the arms and legs, we consider that the patient may have Parkinson’s disease, and at this time, we can do a cranial MRI to rule out secondary head lesions. Third, the shivering of the arms and legs, we should ask the patient whether there is excessive tension or anxiety, and some patients with mood disorders suddenly appear acute anxiety attacks during mental stimulation or excessive life stress, also manifested as shivering of the arms and legs.