Coarse salt hot compress for lumbar disc herniation is useful to improve blood circulation and relieve the state of lumbar muscle tension and spasm, the details are as follows: a. Improve blood circulation: by heating the coarse salt and placing it on the part of the lumbar disc herniation, or the painful part, the acupuncture points of the lumbar region, such as lumbar Yangguan, large intestine Yu, kidney Yu, rank side and other acupuncture points, through the physical heating effect of salt, can make the local capillaries expand The local blood circulation is improved, blood flow is faster, venous reflux is accelerated, local inflammatory pain-causing substances will be eliminated, and local pain symptoms will be relieved. Second, relieve the lumbar muscle tension, spasm: through the hot compress of coarse salt can relieve the lumbar muscle tension, spasm, muscle relaxation, the compression of the nerve can be reduced, the blood vessels between the muscles can also be diastolic, so that the metabolism can be restored to normal.