1, parents should be concerned about the child is testicular development, there are doubts to go to the hospital to consult the doctor, find the problem in time to deal with, for the child’s growth and development are good. 2.Inject the mumps vaccine on time. Avoid going to mumps endemic areas as much as possible. 3.Clean your body and avoid urinary tract infections. 4.Prevent trauma. 5.For men of childbearing age, avoid high temperature environment. 6.Cryptorchidism should be operated as early as possible, preferably at the age of 3-5. 7.Circumcision must be treated surgically, and prepuce should pay attention to local cleanliness and hygiene.