Elderly people who can’t hold their urine are considered to be related to prostatic hyperplasia, urinary tract infections, and neurogenic bladder. 1. Prostatic hyperplasia: with increasing age, men develop prostatic hyperplasia, due to the increase in the size of the prostate, resulting in urethral compression, causing obstruction of the bladder outlet. With the development of the disease, can show urinary urgency, frequent urination, increased nocturia, may lead to the emergence of the inability to hold urine. 2. Urinary tract infection: that is, urinary tract infection, mainly due to bacterial and pathogenic infections, urinary tract obstruction, low immunity, etc. can also induce the disease, manifested as urinary urgency, frequent urination, painful urination, etc., which may lead to the situation of not being able to hold urine. 3. Neurogenic bladder: mainly due to cerebrovascular disease, craniocerebral tumor, diabetes mellitus, long-term alcoholism, drug abuse, etc., will show frequent urination, urinary urgency, urinary retention, sexual function abnormality, etc., which may also lead to the situation of unable to hold urine. 4. Others: urinary tract tumors, stones, etc., can also cause the relative capacity of the bladder is insufficient, which may lead to the emergence of the situation of unable to hold urine. Therefore, when the elderly can not hold urine, it is recommended to consult a doctor in time to find out the cause.