Postpartum bedwetting at night is considered to be related to pelvic floor muscle group injury, urinary tract infection, prolonged labor and other triggering factors. 1. Pelvic floor muscle group injury: Due to the fact that during labor, the fetus passes through the birth canal and injures the pelvic floor muscle group or the innervating nerves and blood vessels, bedwetting at night may occur after delivery. 2. Urinary tract infection: if you don’t pay attention to the hygiene in time after delivery, it may cause urinary tract infection, and the patient may have symptoms such as urinary urgency, frequent urination, painful urination, etc., and in serious cases, bedwetting may occur at night when resting. 3. Long delivery time: when the delivery process is long, the prenatal part of the fetus stays in the birth canal for too long, which will cause the pelvic floor muscles or ligaments to dilate for too long, and the bladder is pressurized for a long time, which can lead to urine leakage from the bladder in the postpartum period. 4. Other triggering factors: after delivery due to overwork, childbirth and other factors may affect the recovery of the pelvic floor muscles, or lead to defects in the pelvic floor musculofascial defects, and then the occurrence of postpartum bedwetting at night. After the occurrence of postpartum bedwetting at night, you need to go to the hospital in time to check the specific causes and treatment, so as not to delay the condition.