Congenital dysplasia of the hip is actually developmental dysplasia of the hip DDH, and its treatment is one of the most complex diseases treated in pediatric orthopedics. It is divided into many different age groups as follows: 1. Within half a year old: conservative treatment is the main treatment, conservative treatment is to wear Pavlik pockets, wear bead-like pockets can be, the results are similar to normal joints. For irreducible hip dysplasia, if the conservative treatment for 3-4 weeks is still unable to reset, we should give up such treatment to avoid aggravating the disease; 2. 6 months-2 years old: conservative treatment is the main treatment, but the results of the treatment done at this time are far from normal; 3. 2 years old and above: surgical treatment is the main treatment, including various osteotomies.