1.How to operate the postoperative dilation of congenital megacolon? Generally, after two weeks after surgery, anal dilation is feasible. Dilation is performed with dilation strips (or with cervical dilatation strips). Dilation is performed from the smallest to the largest size, without skipping sizes. Apply sterile petroleum jelly to the front end of the dilation strip and insert it into the anus slowly, without violence. This should be done for the first time under the guidance of a doctor. 2.Why is postoperative dilation necessary? Is it necessary for all children? The anastomosis of the anus is narrowed after surgery due to the contraction of the anastomotic scar. However, it is different for different surgery and different children, and it should be decided according to each case. 3.How long after congenital megacolon surgery do I have to start dilation? How long does the dilation need to last? Dilation can be started three to four weeks after surgery. The duration of dilation depends on the specific situation. 4.How often should I dilation? What are the dangers of frequent dilation? Dilation can be performed once a day. Dilation can still be painful for the child, so it is not appropriate to dilation several times a day. 5.When can the number of dilation be reduced? When can I stop dilation? The number of dilation should be reduced or even stopped by the treating doctor according to the situation. 6.Can I use cooking oil as lubricant for postoperative dilation? Can I use my fingers instead of a dildo? Yes, it is better to use Vaseline for lubrication. It is also possible to use fingers instead, but it is better to use anal dilation strips for dilation. Dilation can be started three to four weeks after surgery. The duration of dilation depends on the specific situation. 7.What other precautions should I take when dilation? Before dilation, you should sterilize and clean the anal canal, apply sterile petroleum jelly to the front of the dilation strips and put them into the anus slowly, without using violence. This should be done for the first time under the guidance of a doctor. 8.In addition to dilation, what should be noted about the child’s diet? Some children are more prone to diarrhea than others after congenital megacolon surgery, and each child reacts differently to different foods. Generally speaking, raw and cold foods tend to cause diarrhea in children. Therefore, it is necessary to pay attention to the diet and avoid cold foods as much as possible.