Minimally invasive lumbar intervertebral disc surgery is generally the treatment of lumbar intervertebral disc herniation disease, two weeks after the operation, calf pain has been considered to be rebound edema, nerve root chronic inflammation and nerve root adhesion. 1. Rebound edema: minimally invasive surgery to remove the disc to lift the nerve compression, the nerve suddenly lift the compression, there will be rebound edema phenomenon. That is, the edema of the nerve is further aggravated within a short period of time, thus affecting the blood supply of the nerve and leading to nerve conduction dysfunction and lower limb pain symptoms. Usually, the symptoms can be relieved after a few days of conservative treatment. 2. Chronic inflammation of the nerve root: If the patient’s condition of lumbar disc herniation is more serious, the nerve root is stimulated or compressed for a long time. Even after minimally invasive lumbar disc surgery, the inflammation and edema of the nerve root may not subside in time, which may lead to constant pain in the calf two weeks after minimally invasive lumbar disc surgery. 3. Nerve root adhesion: local bleeding during the surgical removal of the disc to form hematoma and soft tissue adhesion and compression of the nerve, which can aggravate the nerve conduction dysfunction, thus causing pain symptoms in the lower limbs. Generally, conservative treatment is needed for observation, and surgery is needed to remove the hematoma and release the adhesion when the condition is serious. There are many reasons for the pain in the lower leg two weeks after the minimally invasive lumbar disc surgery, and it is recommended that the patient consult a doctor in time to clarify the cause of the disease and standardize the treatment. After surgery, patients need to rest in bed, do not turn over forcefully.