【Objective】 To explore the effects of early intervention in developmental dysplasia of hip. 【Methods】 For those,infants under six months who were diagnosed with developmental dysplasia of hip by Color Ultrasonic Doppler,according to the hyper acoustic results and their ages,we enacted different intervening strategies and therapeutic schedules,and also advised their parents conduct early intervention and regular follow-up interview. 【Results】 After these 73 of 122 hip joints of GrafIIa were reexamined and found that 71 of them had return to normal,and the other 2 of no avail also returned to normal after Pavlik hammock treat.8 of 10 of GrafIIb returned to normal after Pavlik hammock treat,and the other 2 also had return to normal after treat in children orthopedics department.2 of 3 hip joints of GrafIIc-IV had return to normal after receiving treat in children orthopedics department,and the other 1 took in an operation after non-effected traditional treat.23 of 41 hip joints without reexamination received X-ray check after six months.2 of them were diagnosed as DDH and back to normal after treat in children orthopedics department.The left 18 refused to take reexamination and another 8 lost contact. 【Conclusion】 Therefore it is concluded that the early intervention in developmental dysplasia of hip will help them progress towards normal hip joint structure.