Bladder dysfunction may be related to the influence of drugs, or may be caused by diseases such as multiple sclerosis and diabetic peripheral neuropathy. 1. Drug influence: if long-term use or overdose of drugs such as antihypertensive drugs, anti-allergy, etc., to a certain extent, it will affect the central nervous system and vascular smooth muscle tissues, and then cause bladder dysfunction. 2. Multiple sclerosis: the cause of this disease is not yet clear, may be related to viral infection, autoimmune response, genetics, environment and other factors. As multiple sclerosis will be accompanied by its own neurological dysfunction, so the patient has bladder dysfunction, which can be manifested as urinary frequency, incontinence and so on. 3. Diabetic peripheral neuropathy: this disease is a common complication of diabetes mellitus, research has shown that it is mainly related to microangiopathy, metabolic disorders, inflammatory damage to the nerves caused by excessive blood glucose. Diabetic peripheral neuropathy is easy to involve the genitourinary system, so patients will have urinary urgency, increased nocturia, urinary difficulty, incomplete urination and other bladder dysfunction manifestations. Besides, bladder dysfunction may also be caused by other reasons such as cranial tumor, intervertebral disc disease, spinal cord lesion, alcoholism and so on. When bladder dysfunction occurs, patients should go to regular hospitals for consultation and treatment after clarifying the specific causes.