Physical examination, imaging and electromyography can be done for sciatica. Sciatica is a common clinical disease, to clarify the cause of the disease, the doctor can carry out the relevant clinical signs and symptoms of the patient, but also need to do X-ray, CT, magnetic resonance, electromyography and so on. Lumbar spine X-ray can observe whether there are pathologic changes and intervertebral foraminal stenosis in the lumbar spine, and whether there is direct compression of the sciatic nerve. Lumbar spine CT can clarify whether there are symptoms of nerve root compression, and can observe whether there is stenosis of the intervertebral foramen and compression of the intervertebral disc. Magnetic resonance can irradiate the lumbar spine and gluteal muscle, observe the change of lumbar intervertebral disc, and the relative relationship between lumbar paraspinal soft tissues and nerve roots. When the lumbar spine does not change, it usually belongs to dry sciatica, and at this time, it is necessary to take pictures of gluteus maximus muscle to observe whether there is any change of the pudendal muscle or whether it is compressing the sciatic nerve. To clarify whether sciatica is myogenic, peripheral or central neurologic, electromyography can be given. If the test results are abnormal, it is recommended to consult a doctor to determine the cause of the disease and to carry out targeted treatment or therapy.