Dementia is generally referred to as Alzheimer’s disease, and urinary incontinence in patients is mainly related to degenerative lesions of the central nervous system. The reason why Alzheimer’s disease patients have urinary incontinence is mainly related to the disease-induced degenerative lesions of the central nervous system, which is mainly related to the imbalance of the production and removal of beta amyloid. Usually, patients in the advanced stage of the disease may develop myoclonus, urinary and fecal incontinence, extensor-plantar response, hemiparesis, and even end-stage manifestations such as autism and bed-riddenness. In addition to the above, incontinence in some Alzheimer’s disease patients is associated with multiple pregnancies, abnormal prostate function, decreased hormone levels and other factors such as urinary stones and urinary tumors. Notably, diabetes, medication use, and being overweight can increase the chances of urinary incontinence. It is recommended that Alzheimer’s disease patients with urinary incontinence actively seek medical treatment for a comprehensive examination, in order to identify the cause of the disease and then follow the doctor’s instructions for treatment, so as to improve urinary incontinence and improve the quality of life. Urinary incontinence patients need to strengthen personal hygiene care to prevent urinary tract infections.