Chronic subdural hematoma is commonly found in the elderly, who have chronic subdural hematoma due to brain atrophy and prolonged compression of the hematoma. After surgery, the subdural gap is larger, and the brain tissue is often difficult to reset, making the subdural fluid persist for a long time and the hematoma easy to recur. Post-surgical care of chronic subdural hematoma, the patient should be instructed to go to the pillow and lie flat, like a side of the surgical area, and the patient should be instructed to drink more water, increase the rehydration, puffing, breath-holding, ballooning and other actions to increase the speed of brain tissue reset, eliminate the subdural space, so that the subdural fluid can be eliminated as soon as possible. It is necessary to observe the patient’s consciousness, pupils, and limb activities.