Muscle tone is the normal degree of tension in muscle fibers at rest or at complete rest. Often when touching the muscle is with a certain fullness, this feeling is maintained by the muscle tone, so the appropriate muscle tone is necessary to carry out normal posture and maintain the basic movement, so if the muscle tone is abnormal, it will inevitably lead to abnormal posture and movement. Generally speaking, the pathological state of muscle tone mainly includes increased muscle tone and decreased muscle tone. For increased muscle tone, clinically it is mainly divided into cone system diseases and extrapyramidal diseases, as follows: 1. If it is a cone system disease, there are some common brain and spinal cord diseases, such as minor cerebral infarction can cause increased muscle tone, which can have some self-healing with the recanalization and recovery of cerebral infarction. However, in cases of severe spinal cord injury, spinal cord tumors or cerebrovascular disease of the spinal cord, etc., the increased muscle tone tends to get worse as the condition worsens. If the cause is not removed, it is often not self-healing. 2. For extrapyramidal diseases, some patients will have the special performance of increased muscle tone, which can be clinically manifested as cogwheel-like increase. For these patients, long-term treatment with medication is needed to improve and maintain the appropriate muscle tone, while removing the pathology of hypertonia.