Night shift daytime sleep always urinate more, may be a normal phenomenon, cystitis, urethritis and so on. 1. Normal phenomenon: If you drink a lot of water before going to bed or eat some fruits with high water content, such as watermelon, etc., you will have the symptom of urinating a lot, which is a normal phenomenon, and there is usually no other discomfort. 2. Cystitis: most of the cystitis is caused by bacterial infection, and do not pay attention to personal hygiene, due to inflammation stimulation patients will appear frequent urination, urinary urgency, urinary pain, and pain in the bladder area and other symptoms. 3. Urethritis: Urethritis is divided into gonococcal urethritis and nongonococcal urethritis, gonococcal urethritis is caused by gonococcal infection nongonococcal urethritis is caused by infection of other pathogens, the patient will also appear frequent urination, urgency, painful urination, urethral orifice redness and swelling, as well as urethral secretion increase and other symptoms. If you have a night shift daytime sleep always urinate more than the case, should be timely to go to the hospital by the doctor to clarify the cause, for the cause of the symptomatic treatment, so as not to delay the condition.