The lack of foot control is considered to be caused by spinal cord compression or a precursor to a cerebral infarction, for example. Early intervention is needed to relieve spinal cord compression or treat infarction early. 1. Spinal cord compression: spinal cord compression causes weakness of lower limbs, abnormal sensation, numbness of hands and feet, fear of cold in lower limbs or accompanied by weakness of upper limbs, and in severe cases, hemiparesis of lower limbs and other symptoms. It is necessary to carry out nuclear magnetic or CT examination to clarify the location of spinal cord compression and the degree of compression, and then carry out timely surgical treatment to relieve the compression, as the spinal cord will not be able to return to normal after a long time of compression. 2. Precursor of cerebral infarction: If it is the precursor of cerebral infarction, it is necessary to perform cranial CT examination in a timely manner to clarify the location of infarction foci, as well as the size of the thrombus, to find out the cause of the problem, and then perform thrombolytic treatment in a timely manner. Under the guidance of the doctor oral warfarin, rivaroxaban and other anticoagulant drugs. When limb dysfunction and hemiplegia appear in the later stage, active rehabilitation exercises should be carried out. Symptoms such as uncontrollable lower limb and weakness should seek medical treatment in time for early treatment.