The level of pain is different due to the age of the patient as well as the physical condition. When the powder tumor is drained and changed, if the inside of the operation area is accompanied by more fluid and pus, it is easy to cause the manifestation of pain. The reason for the pain may be due to one’s poor ability to tolerate pain. If the tumor is infected more seriously and contains more pus, the pus can only flow out gradually after 4-5 times of dressing changes, and the pain symptoms can be reduced gradually. Depending on the body type, it may also be caused by exuberant sebum secretion and prolonged accumulation of clogged pores, or excretory disorders and frequent consumption of spicy foods, or caused by prolonged late-night stays and bad lifestyle habits. If the pain is more intense when changing the medication, you can take ibuprofen, diclofenac sodium and other painkillers about 1 hour before changing the medication. There are many causes of pain, it is recommended to pay more attention to lifestyle habits, which can improve the pain of dressing change, so as to achieve a good therapeutic effect.