Children’s urethral redness and swelling are usually related to inflammation of the urethra caused by repeated stimulation and friction by clothes, scratching, and poor hygiene of the genitourinary tract. Children’s urethral redness and swelling is generally caused by inflammation of the urethra, when children wear clothes too tight, rough clothing materials, etc., can rub the urethral area, causing redness and swelling. Children scratching the urethra can cause damage to the area, resulting in redness and swelling; poor hygiene in the area can easily harbor bacteria, causing inflammation and redness and swelling. When children’s urethra is red and swollen, usually hang up the urology department for diagnosis, under the guidance of the doctor to clarify the cause, active treatment. Daily life attention to drink more water, change and wash underwear, eat more fresh fruits and vegetables, choose cotton, more loose underwear.