Normally adults urinate 0 to 2 times at night. An increased number of nocturnal urinations is the most common symptom of prostate enlargement. With the development of prostatic hyperplasia, the number of nocturnal urination can reach 7 to 8 times. The increase in the number of nocturnal urination in the early stage is due to compensatory hypertrophy of the muscle layer of the bladder triangle after prostate enlargement and hyperreflexia of the forceps. The reason for this is that during the day the attention is distracted and the threshold for urination is elevated, while at night the environment is quiet, the attention is focused and the threshold for urination decreases, coupled with the weakening of cortical inhibition after sleep, the enlarged prostate that grows suddenly into the bladder cavity can have more frequent irritation responses, thus first appearing to increase nocturnal urination. The increase in nocturnal urination often affects the patient’s normal life and sleep at night, increasing the patient’s psychological burden and easily producing a series of complications, so once the increase in nocturnal urination occurs, you should promptly consult a urologist for an examination.