Lumbar muscle strain or fasciitis and other causes of back pain, with Yunnan Baiyao aerosol useful, and lumbar vertebrae fracture or disc herniation and other causes of back pain is not effective. Lumbar muscle strain or fasciitis caused by back pain, mainly because of the lumbar muscle, fascia in the injury caused by aseptic inflammation, this kind of back pain is generally confined and light injury, after resting the pain can be gradually relieved. Yunnan Baiyao Aerosol has the effect of activating blood circulation and dispersing blood stasis, subduing swelling and relieving pain, and it can treat bruises, muscle aches and pains, rheumatism pain and so on. So it is useful for the above lumbar pain. For lumbar disc herniation, lumbar spine fracture or lumbar spine slippage, etc., due to the deeper part of the injury, the drug ingredients in Yunnan Baiyao Aerosol can seldom penetrate into the diseased part, so the effect and efficacy of this kind of lumbar pain is poor. Therefore, when you use Yunnan Baiyao aerosol to treat lumbar pain, you need to combine your own condition and use it under the guidance of your doctor.