Circumcision is not a major surgery, but there are still risks, but the risks of surgery are relatively small and the probability of occurrence is also relatively small. 1, first is the anesthesia accident, serious may cause respiratory and cardiac arrest. The anesthesiologist will also talk about the risks of anesthesia again before the surgery. In fact, the possibility of anesthesia accidents is very small, especially in large hospitals, hospitals with many surgeries, less than one in a thousand, but it is still possible to happen, pay attention to the following points: fasting before anesthesia is very important, fasting (including water) 6-8 hours before surgery, so that the stomach is basically empty, not easy to vomit, accidental aspiration, surgery can not be in the case of cough, runny nose, vomiting, diarrhea, fever, etc. to do surgery. The anesthesiologist will ask relevant questions before the anesthesia talk, can not be hidden! 2, bleeding after surgery penis erection, the penis is a very special tissue, the doctor will stop bleeding very thoroughly during surgery, but the penis erection, urination or poop force, may cause penile congestion, small blood vessels rupture lead to bleeding, the general probability of bleeding about 5%, which most and less blood bleeding, by compression, disinfection, etc. can be stopped, a very small number of need to go to the operating room again to stop bleeding. 3, the surgical incision infection, septic. The circumcision incision is a type II surgical incision, we use cosmetic stitches, cosmetic sutures, generally do not remove the stitches without changing the medicine, but the incision is at the urethra, near the anus, there may be redness, infection and pus in the incision, but in general, the surgical incision infection is not common. As the foreskin and penis head of the circumcised baby are closely adhered, the separation surface is a relatively large trauma, there will be more yellow ooze, forming scabs or blood scabs, this situation is not considered an infection. 4, foreskin edema, foreskin mouth narrow, the appearance is not ideal. Due to the characteristics of the baby’s foreskin tissue, foreskin edema is bound to occur, only some babies edema is more powerful, some very slight, generally 1-2 weeks to subside. Babies with scars may have contraction of the foreskin mouth scar leading to narrowing and unsatisfactory appearance. 5.If the urethra is found to have congenital malformation after the foreskin opening is enlarged, the circumcision needs to be stopped. 6.Other accidental situations that cannot be predicted before surgery. The individual difference of each baby is great.