Sore and weak legs can be relieved in different ways depending on the cause. If the fatigue is caused by strenuous exercise, or muscle strain caused by standing and walking for a long time, or by people doing lower limb sports, or by aseptic inflammation of the muscles, first of all, you can give rest to the legs, and give local massage, hot compresses, or soak your feet in hot water, to promote local blood circulation, and the symptoms should be slowly relieved. In addition, there may be lumbar spine diseases, such as lumbar disc herniation, lumbar spinal stenosis, or lumbar spondylolisthesis compression of the nerve roots of the lower limbs, resulting in generalized weakness. Treatment mainly focuses on treating the lumbar spine, and oral medication, physical therapy, acupuncture, and tuina therapy can generally be applied to achieve better results.