Musk Bone Strength Ointment has the effect of activating blood circulation and relieving blood stasis, soothing the meridians and opening the channels. The effect time is mostly 12-24 hours, and the effect can disappear after 24 hours, so it is usually recommended to change it once every 24 hours. Musk Bone Ointment can treat sprains caused by trauma, pain, swelling and edema caused by strained muscles and fascia. Patients usually need to apply it for about 1 day, and it can lose its therapeutic effect after a long time. However, some patients are allergic to the drug, which can cause localized edematous erythema with clear boundaries. It is recommended to remove the ointment in time to avoid more serious adverse reactions. In addition, if the patient has a traumatic skin rupture wound with septic inflammation, the use of the drug is prohibited, otherwise it may cause more trauma. Patients are advised to pay attention to wipe the skin before applying the ointment, and massage and hot compress can be combined with the treatment in cold weather. If there is no improvement after about 3 days of applying this ointment, the patient should go to the hospital for further diagnosis and treatment.