Walking out of shape can be caused by heredity, early standing, living environment, calcium deficiency and other factors such as gluteal contracture. 1. Heredity: If one of the parents has a bowlegged condition, the child may also have a bowlegged condition. 2. Early standing: During the stage of learning to stand or walk, the feet will naturally separate, due to the lack of foot strength, if the child stands too early or stands for a long period of time in the early stage, he/she may also have external bifurcation. 3. Living environment: If you don’t have the correct posture for walking and running, you may also have the condition of external bifurcation. 4. Calcium deficiency: infants and young children have low calcium content in their bones, and learning to walk and stand will also cause pressure on the bones, if the calcium supplement is not complete, it may lead to bilateral iliopsoas joint separation, and ultimately the formation of the external eight. 5. Contracture of gluteal muscle: usually due to trauma, infection, heredity and other factors caused by degeneration and contracture of gluteal muscle and its fascial fibers. The patient will often have a bowlegged, swaying gait when walking, and can also be jumping if walking fast. If there is a tendency to have a bowlegged gait, you need to go to the hospital in time, under the guidance of the doctor for correction.