Postoperative precautions after lumbar disc fusion include dressing change, functional exercise, diet and nursing care. 1. Medication change: In the early stage after lumbar disc surgery, it is necessary to actively change the medication and disinfect the incision to prevent infection. Usually, the medication change is carried out once every 2~3 days, and the interval between medication changes may be shortened in case of local infection. 2. Functional exercise: You can’t do some exercise too early after the operation, you can do leg lifting training in bed in the early stage to prevent stiffness of joints and muscle atrophy, but it is not recommended to do the functional exercise of the back muscles, you need to wear a waist corset to go down to the ground, the fusion of intervertebral discs surgery is recommended to do exercise after three months, you can do some walks, jogging and other lumbar activities which are less stressful. 3. Diet and care: after lumbar disc fusion surgery, it is forbidden to eat spicy and stimulating food, and it is better not to smoke and drink in the early postoperative period, so as to avoid the healing of the incision from being affected; in the postoperative period of lying in bed, it is necessary to turn over on time, so as to prevent the emergence of pressure sores. There are many precautions to be taken after lumbar disc fusion surgery, and the precautions vary according to the individual’s condition, so listen to your doctor’s instructions.