An enlarged prostate protruding into the bladder is when a patient has more severe BPH, which is more serious and can cause symptoms such as difficulty urinating. Benign prostatic hyperplasia is the proliferation of prostate glands and interstitium, causing enlargement of the prostate gland, which leads to obstruction of the outlet of the bladder and triggers a series of symptoms. In the early stage, frequent urination may occur, especially at night. With the development of the disease, the prostate gland further enlarges and protrudes into the bladder, the obstruction can be further aggravated, manifested as progressive aggravation of urinary difficulty, which can develop into chronic urinary retention and filling incontinence. Benign prostatic hyperplasia is a benign disease, and most patients have a better prognosis after drug treatment such as terazosin and surgical treatment. It is recommended to seek medical treatment in time for diagnosis and treatment.