Numbness in the right leg is commonly caused by severe right leg trauma, lumbar disc herniation, pear-shaped muscle syndrome and other diseases, as follows: First, severe right leg trauma: severe right leg trauma can lead to local edema, the degree of edema is more serious, which can lead to nerve compression, nerve ischemia and hypoxia will manifest as symptoms of numbness in the right leg. After treatment, the edema will gradually subside, and the numbness will disappear completely. Second, lumbar disc herniation, pear-shaped muscle syndrome, etc.: lumbar disc herniation and pear-shaped muscle syndrome and other diseases can stimulate and compress the sciatic nerve, resulting in numbness symptoms in the back of the right leg and lateral calf, and the numbness symptoms can be completely relieved after timely treatment of the primary lesion. If the history of the disease is long and the treatment is not timely, the numbness symptoms will persist and may even cause muscle atrophy in the right leg. Therefore, once numbness symptoms appear in the right leg, timely consultation and treatment should be carried out at an early stage to avoid delaying the disease and causing serious adverse consequences, thus affecting the patient’s normal life and work.