Causes of slowness of movement include physiologic causes, degenerative and degenerative diseases, intracranial diseases, and mental diseases. 1. Physiological causes: Some people belong to the so-called chronic people, who are slower in their activities, which may reflect the situation of slow movement. 2. Degenerative and neurodegenerative diseases: Elderly patients may also experience slow movements as they age. When suffering from Parkinson’s disease, Alzheimer’s disease and other neurodegenerative diseases, patients will show slow movement. At the same time, the onset of Parkinson’s disease is accompanied by resting tremor, muscle tonus and other symptoms, and Alzheimer’s disease can be manifested as a significant loss of intelligence. 3. Intracranial diseases: including cerebral hemorrhage, cerebral infarction, intracranial malignant tumors, etc. At the onset of the disease, if the function of the limbs is obviously affected, the muscle strength decreases significantly, and the activities of motor retardation and other symptoms. 4. Psychological and mental diseases: depression, schizophrenia and other diseases, can also be accompanied by motor retardation.