When it comes to appendicitis, no one is unfamiliar with it. However, when it comes to appendicitis in children, parents are always surprised to learn that appendicitis is only for adults, but not for children. The younger the age, the more likely it is to be misdiagnosed and the more likely it is to perforate the appendix. Clinical manifestations: abdominal pain, can be accompanied by nausea, vomiting or fever, etc. Abdominal pain is sometimes epigastric, gradually to the right lower abdomen, physical examination: right lower abdomen fixed pressure pain. 1.Why do you get appendicitis? ①, appendiceal cavity obstruction: this is like a water pipe, something is blocked in the middle, the official cavity pressure increases, appendiceal blood flow is impaired, and bacteria multiply. This kind of appendicitis with fecal stone has poor conservative effect and is very likely to cause appendiceal perforation and should be operated as soon as possible; ②, bacterial infection: appendicitis can be caused by infection of the tissues adjacent to the appendix and intestinal infection. Bloodstream infections, sometimes bacteria reach the appendix via the bloodstream after a pediatric upper respiratory tract infection causing appendicitis; ③, innervation: sometimes children are nervous, causing appendiceal innervation nerve tension and vascular spasm causing appendicitis, which is one of the reasons why the prevalence of appendicitis increases during exams and when children start school. 2. How can appendicitis be treated? Appendicitis in children is less likely to be confined than in adults, with a high rate of perforation and rapid progress. Conservative treatment cannot cure it completely, and it may recur later, affecting growth and development and learning, so early surgery is advocated. 3.Which is better: open surgery or minimally invasive surgery? From the current technical level, as long as the operator is skilled in laparoscopy, the minimally invasive effect is better than open surgery, especially for pediatric appendicitis, we can basically achieve 90% single-hole appendectomy through the umbilicus without scar after surgery. For obese children, minimally invasive treatment is recommended to reduce the chance of incisional infection, and if open, a 3-4cm wound is required, which is not aesthetically pleasing after surgery. Some parents also worry that laparoscopy can be done cleanly. In fact, open abdomen and laparoscopy are the same, both are removing the appendix, the effect of removing the appendix is the same, both can remove the appendix completely. 4.Post-operative precautions: ①, after 6 hours after surgery, move more down to the ground to promote intestinal peristalsis and avoid intestinal adhesions, which is conducive to early feeding; ②, when to eat: generally eat after venting, but it depends on the operation, if the appendix is light and the operation goes smoothly, you can also eat after the recovery of intestinal peristalsis, not necessarily venting; ③, when to vent: each person is different, because the appendix is light and heavy; ④, how to eat: ( The specific situation according to the lightness of appendicitis to listen to the operator arrangements), generally after the exhaust first drink warm water, no discomfort, drink lotus root powder or thin porridge, you can add some salty vegetables, drink 2-3 days porridge, no discomfort, you can eat some soft noodles, 4-5 after surgery can eat some steamed buns or rolls, soak them with water. You can add fruit or meat food, milk, soy products, etc. 1 week after surgery, gradually add, slow transition, about 1 month after surgery diet can return to normal. Special attention should be paid to the postoperative diet, improper diet can easily cause intestinal obstruction, for some tannin-containing food, try not to eat, such as dates and persimmons, try not to eat within a year; ⑤, when can you take a bath: if the wound heals well, you can take a shower 2 weeks after surgery, and take a bath 1 month after surgery; ⑥, about changing medication: generally 3 days to change once, change medication 2-3 times; ⑦, how long to stay in the hospital: simple appendicitis 3-5 days, septic appendix 5-7 days, perforated 7-14 days; ⑧, sports activities: the general wound healing a week, can not tolerate strenuous exercise, usually 1 month after surgery can participate in sports activities.