There are more reasons for 12-year-old children’s back pain, which may be related to trauma, prolonged standing or sitting, and urinary stones. 1. Trauma: small children’s back pain may be related to lumbar sprains and so on. Acute injury to the lumbar tissues caused by external forces may lead to low back pain and other symptoms. 2. prolonged standing or sitting: because the child’s skeleton is not yet fully developed, prolonged standing or sitting may cause lumbar injury, and in severe cases, the symptoms of back pain may be. 3. urinary stones: for example, ureteral stones, large stones show a dull pain, small stones in the process of downstream along the ureter, irritation to the ureter, severe pain. The 12-year-old child back pain can also be seen in other causes, it is recommended to consult a doctor in a timely manner, follow the doctor’s instructions for relevant examinations, with the help of the doctor to clarify the cause, and targeted treatment or treatment.