Right hemiplegia and numbness may be caused by cervical and lumbar spine diseases, cerebrovascular diseases, intracranial space-occupying lesions, spinal cord lesions and so on. 1. Cervical and lumbar spine disease: when patients suffer from lumbar spondylosis, cervical spondylosis and other diseases, it is easy to cause vertebral compression of the right peripheral nerves, resulting in the occurrence of the right half of the body pain and numbness. 2. Cerebrovascular disease: If the patient suffers from cerebral infarction, cerebral ischemia and other diseases, it may lead to numbness and pain on the right side of the body. 3. Intracranial space-occupying lesions: when the patient has brain tumor disease, it may compress the brain tissue in the sensory innervation area, causing part of the nerve function to be impaired, and the phenomenon of right hemiplegia and numbness occurs. 4. Spinal cord lesion: if the patient suffers from the foreign body or tumor in the spinal canal, it is easy to press on the spinal cord, resulting in numbness and pain in the right side of the body. Patients with right hemiplegia and numbness should go to the emergency room of the hospital in time, and follow the doctor’s instructions after clarifying the cause of the disease.