Infants crying hard before urination may be caused by physiological reaction, urinary tract infection, inflammation of the urethra and other reasons. 1. Physiological reaction: Since the baby’s stomach will be slightly full before urination, the baby may have a reflexive discomfort, so he or she cries hard before urination. 2. Urinary tract infection: Because babies don’t change diapers in time after urination or bowel movement, it may lead to bacterial invasion of the urinary tract and cause urinary tract infection, so babies cry hard before urination. 3. Inflammation of the urethra: Especially for male infants, if they often wear diapers, it may cause redness and inflammation of the prepuce due to friction. There will be pain during urination, causing the baby to cry hard before urination. There may be other reasons why babies cry hard before peeing, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.