When a small injection is accompanied by pain in the buttocks, generally according to the specific circumstances of the pain is different, the clinical often can take different treatment methods. First, if the injection is accompanied by local soft tissue injury, which causes swelling and pain. At this time, you can improve the blood circulation of the local tissues through the local application of hot ointment package, appropriate massage and physiotherapy, infrared radiation to promote the faster absorption of local inflammation and relieve pain symptoms. Second, if the intramuscular injection inadvertently tie to the subcutaneous blood vessels, resulting in the formation of local hematoma, and cause obvious swelling and pain of the buttocks. At this time, it is recommended to apply local ice to promote capillary constriction and avoid progressive increase of hematoma volume, apply blood circulation and stasis cream externally, and take Panax ginseng tablets orally to promote faster absorption of hematoma. For larger hematomas, debridement of the hematoma can be considered under anesthesia to avoid local infection.