Perianal abscess in newborns is more serious, and its causes include: 1, perianal abscess is clinically common in male infants, which is related to the hormone level in the baby’s body, however, there is no definite evidence; 2, the skin of newborns is more tender, and if the perianal area is hard with diapers and rubs more with the skin of the buttocks, it produces skin lesions, the barrier function of the skin decreases, and skin or stool bacteria can enter the soft tissue through the The skin or stool bacteria can enter the soft tissue through the skin lesions, thus entering the anal sinus and easily forming a perianal abscess; 3. If the stool is thin and rotten, clogged and stagnant in the glands, infection will form, and after the infection, it will continue to aggravate and an abscess will be formed. If an abscess is formed in this case, there will also be a fistula formed. That is, there will be pus flowing out next to the abscess and flowing into the skin or near the anus; 4. Pediatric perianal abscesses may also be related to the physiological vertical state of the rectum and the anal canal. The direct pressure of feces on the anal sinus of the dentate line of the anal canal can easily cause damage to the anal sinus, and after the damage secondary infection, a perianal abscess will be formed.