The pain below the left hip bone of an 8-year-old child may be muscle strain, septic osteomyelitis, bursitis, etc., and need to treat the cause, including general treatment, medication or surgical treatment. 1. For muscle strain caused by the 8-year-old child’s left hip bone pain, should immediately stop the activity, relax the muscles, pressure bandage; pain is intense, can follow the doctor’s advice oral ibuprofen and other analgesics; if there is a tendon rupture and other serious conditions, need to be surgically repaired. 2. For purulent osteomyelitis caused by the 8-year-old child’s left side of the hip bone below the pain, can follow the doctor’s instructions oral cefazolin and other antibiotics; can be under the guidance of the doctor to choose the puncture suction surgery, open drainage, dead bone removal surgery, and so on. 3. For the bursitis caused by the 8-year-old child’s left side of the hip bone below the pain, can follow the doctor’s prescription oral penicillin and other antibiotics; drug treatment is ineffective, can choose to perform bursa resection. Parents are advised to take their children to the hospital in time, to clarify the cause of the disease, under the guidance of the doctor for standardized treatment, so as not to delay the condition.