Four months after surgery for a herniated lumbar disc, you are in the late stages of surgery. According to the degree of their recovery follow the doctor’s instructions, you can do some lumbar training, strengthen the lumbar muscle strength. Take stretching the waist as the main exercise, because when stretching the waist, you can move the waist muscles, to prevent long time immobilization lead to stiffness, but also can prevent muscle atrophy. For example, you can usually lie down on the bed to carry out straight leg elevation training, the elevation height needs to be more than 70 degrees, which can reduce the pressure of the lumbar intervertebral discs and facilitate the reset. You can also take the leg stretching and foot hooking exercise to prevent muscle atrophy. After your condition improves, you can gradually strengthen the exercise. You can also take a small swallow fly exercise, this exercise method is to stretch the limbs, enhance the strength of the lumbar muscles. You can also do arch bridge exercise and swimming exercise to train your own coordination and enhance muscle strength. In the process of exercise should pay attention to the protection of the waist, step by step, to prevent overloaded exercise lead to lumbar injury again. At the same time, pay attention to the waist to keep warm, light diet, to avoid aggravation of low back pain. Consult your physician for advice.