The causes of anterior pelvic tilt in children may be caused by congenital factors, improper sitting posture, flat feet and other factors. 1. Congenital factors: due to congenital bilateral hip dysplasia, children are very prone to bilateral hip deformity or dislocation in life, which will lead to the occurrence of anterior pelvic tilt. 2. Improper sitting posture: due to improper sitting posture when writing homework or various sports in childhood, it increases the burden of lumbar vertebrae, which also leads to lumbar anterior convexity, anterior pelvic tilt and other compensatory postures. 3. flat feet: when children suffer from special flat feet, walking or exercise process will make the body’s center of gravity shift, walking often keep forward motion as to compensate for the movement to maintain the stability of the body, over time will cause anterior pelvic tilt. Children may also have other causes of anterior pelvic tilt, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.