Night urination may be caused by physiological factors such as drinking too much water before going to bed, mental stress, etc. It may also be caused by prostate hyperplasia, urethritis, cystitis, or other diseases such as diabetes mellitus. 1. Prostatic hyperplasia: early symptoms of prostatic hyperplasia are increased urination at night, in addition, there may also be frequent urination, urinary urgency, urinary incontinence and other symptoms. 2. Physiological factors: drinking a lot of water before going to bed, mental stress, insomnia and other physiological factors, may lead to increased nocturia. 3. Urethritis: Urethritis is caused by pathogens such as gonococcal or non-gonococcal infections. Patients with urethritis will experience frequent urination, painful urination, itching in the urethra, and increased urethral discharge. Sleeping at night will make patients get up frequently and increase nocturia. 4. Cystitis: Cystitis is caused by bacterial infections, such as Escherichia coli, Staphylococcus pyogenes and so on. Cystitis patients will be accompanied by frequent urination, painful urination, burning sensation in the urethra, urinary urgency and other symptoms, and patients with severe symptoms will also have urge incontinence, white blood cells in the urine, cloudy urine and other phenomena, which will make the patient increase nocturia. 5. Other: nocturia should also be considered as a result of diabetes, overactive bladder disease and other diseases. There are many causes of nocturia, and it is recommended that patients go to the hospital for examination.