Urinary retention is a clinical manifestation of BPH, characterized by increased obstruction up to a certain level, inability to empty the bladder of all urine during urination, and the appearance of bladder residual urine. BPH is a disease in which the prostate increases in size, disrupts the normal structure and causes a series of dysfunctions, mainly due to different degrees of glandular and/or fibrous and muscular tissue hyperplasia caused by disorders of sex hormone metabolism in the elderly. The etiology of increased residual bladder urine volume is unknown and may be related to age-related hormonal changes. The multiple fibroadenoma-like nodules that appear within the periurethral region of the prostate may originate from the periurethral glands rather than occur in the true fibromuscular prostate (surgical envelope), which is pushed aside by the growing nodules. The hyperplasia may involve the lateral wall of the prostate (lateral lobar hyperplasia) or the tissue at the lower border of the bladder neck (medial lobar hyperplasia). Histologically this tissue is glandular, interspersed with varying proportions of fibrous stroma. When the lumen of the urethral ducts in the prostate section is damaged, urine outflow is gradually obstructed, along with hypertrophy of the bladder forcing muscles, trabeculae formation, small chamber formation and diverticulae. Incomplete bladder emptying causes urinary stasis, which predisposes to infection and secondary inflammatory changes in the bladder and upper urinary tract. Urinary stasis predisposes to stone formation. Long-term obstruction, even incomplete obstruction, can cause hydronephrosis and impair renal function. Once symptoms such as increased nocturia are detected, you should go to the urology department of a regular hospital with urological specialties run by the state and undergo relevant examinations; once diagnosed, professional urologists need to follow formal treatment principles and develop a treatment plan that suits the patient’s specific situation. Before going to sleep, you should release your tension, drink less water, and not drink tea; people who have dry mouth, dry tongue, and obvious thirst due to excessive urination at night should pay attention to drinking an appropriate amount of water, or eating fruits, such as apples, oranges, etc.; you should also avoid applying drugs that are toxic to the kidneys, such as streptomycin, gentamicin, and sulfonamides, etc.