Flash waist is the waist suddenly pulled by external forces and caused by the waist muscles, ligaments and other soft tissue injuries, can be treated with Yunnan Baiyao aerosol. Yunnan Baiyao aerosol is a light yellow to yellowish brown liquid, which has the effect of reducing swelling and relieving pain. It is mainly used for bruises, stasis and swelling, muscle pain and rheumatic pain, so Yunnan Baiyao Aerosol can treat soft tissue injuries caused by flashback. Soft tissue when the acute stage of injury, you can use Yunnan Baiyao aerosol insurance liquid, if the severe pain is still not relieved, can be repeated at intervals of 1 to 2 minutes to give the drug, the use of a day shall not exceed 3 times, spraying the insurance liquid at intervals of 3 minutes, and then spraying Yunnan Baiyao aerosol, 3 to 5 times a day. Yunnan Baiyao aerosol is limited to external use only, do not spray into the mouth, nose, eyes. Allergy can occur in a very small number of patients, and it is prohibited for patients who are allergic to alcohol. If itching, rash and other symptoms occur, the drug should be stopped immediately. It is not recommended for those with skin damage. If the patient’s pain persists after the flashback is not relieved, it is recommended to go to the hospital in time to clarify the cause and then carry out targeted treatment. The use of drugs should be carried out under the guidance of a professional doctor to avoid delaying the condition.