Always want to pee before going to bed, may be due to excessive water intake, prostate enlargement, diabetes and other factors. 1. Drinking too much water: when drinking too much water before bedtime, it will lead to the gathering of water in the bladder, which will lead to the phenomenon of always wanting to pee before bedtime, and the symptom can be relieved by controlling the amount of water consumed. 2. Prostatic hyperplasia: Prostatic hyperplasia can lead to congestion of the bladder neck, so that the bladder forced urethral muscle reflex hyperactivity, thus the phenomenon of frequent urination. Patients can follow the doctor’s instructions to use terazosin, alfuzosin, finasteride and other drugs or take transurethral resection of the prostate and other surgical methods for treatment. 3. Diabetes: diabetic patients with elevated blood glucose, plasma osmolality increases, through the renal filtration of glucose increased significantly, thus causing osmotic polyuria. Patients can follow the medical advice to use glibenclamide, glipizide and other drugs for treatment. Always want to urinate before going to bed, there may be other reasons, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, to give targeted treatment or treatment.