After appendicitis surgery catheter child, the color of the fluid drained in the early postoperative period is usually yellow, pus and blood colored or cloudy fluid. In the case of purulent appendicitis after surgery, often need to be placed in the catheter to drain out the secretion of the infected surgical area. Most of the fluid drained out of the tube is purulent secretion, such as yellow fluid, pus and blood color fluid or turbid fluid. As the disease recovers and the infection subsides, the color of the discharged fluid will gradually become yellowish, clear and transparent fluid, and then the tube can be removed. After the operation, you should pay attention to the cleanliness and hygiene of the wound, change the medicine on time according to the doctor’s instructions, and give intravenous antibiotics, such as ceftriaxone sodium, levofloxacin and other anti-infective treatments, and maintain the cleanliness of indoor air, and if there are uncomfortable symptoms, timely find a doctor to check, and take the appropriate treatment measures. Generally about a week after the operation, the wound can gradually recover, you can remove the sutures.