Numbness of the right leg should be treated according to the specific triggers. Common triggers mainly include cerebrovascular disease, lumbar intervertebral disc herniation, lateral femoral dermatitis and so on. In terms of treatment, it is mainly to apply medication, physical therapy or surgery for the primary cause. 1. Cerebrovascular diseases: including cerebral infarction and cerebral hemorrhage, clinical symptoms are mainly related to the lesion site and lesion area. Common clinical symptoms include headache and dizziness, numbness and weakness of one side of the limbs and activity disorder. Early stage of cerebral infarction can use thrombolysis such as alteplase, and in the recovery stage, aspirin, simvastatin, valsartan and other drugs can be used. Cerebral hemorrhage can be treated with drugs such as warfarin and heparin. If necessary, surgical treatment such as craniotomy can be performed. 2. Lumbar disc herniation: If the sciatic nerve root is compressed due to lumbar disc herniation, causing numbness in the right leg, diclofenac sodium, diclofenac sodium and other medicines can be used. Pain relieving drugs such as diclofenac sodium and celecoxib can be applied to relieve pain. Apply muscle relaxing drugs such as tizanidine and eperisone. Surgical treatment, such as nucleus pulposus removal and open surgery, should be considered if necessary. 3. Lateral femoral dermal neuritis: If it is caused by lateral femoral dermal neuritis that leads to damage of the lateral thigh nerve, resulting in abnormal skin sensation in the thigh, causing numbness in the right leg. Methylcobalamin, B vitamins and other nutritive nerve drugs, glucocorticoids and other treatments can be applied. Numbness of the right leg, if the symptoms persist for a long time can not be relieved, should seek medical treatment as soon as possible, after a clear diagnosis of the cause, the doctor guides the treatment.