The cause of short legs in babies needs to be clarified first. If it is caused by poor posture, it can be corrected by self-exercise; if it is caused by diseases, it needs to be corrected by medical interventions. Babies with short and long legs due to poor posture can be corrected by increasing muscle exercises on the short leg side (e.g., one-legged squats, side leg raises, etc.), and by correcting standing and sitting postures. However, it is important to note that you should only do your own exercises when your doctor has clarified that medical intervention is not necessary. Most babies’ short legs are caused by diseases, the most common being hip dysplasia, as well as scoliosis, arthropathy, pelvic tilt, etc. These short legs cannot be corrected by self-exercise. This kind of short legs can not be corrected through their own exercise. It is necessary to go to the hospital to wear corrective braces, plaster fixation or even surgical correction.