Repeatedly asking a question multiple times is OCD, Alzheimer’s disease, etc. Obsessive-compulsive disorder (OCD) is a multi-dimensional, multi-factorial mental illness, personality traits, genetic factors, psychological environment and other factors play a role in the onset of OCD, with recurring obsessive-compulsive concepts, obsessive-compulsive impulses or obsessive-compulsive behaviors, etc., which will lead to the patient to appear to ask a question many times over. Alzheimer’s disease is a degenerative disease of the central nervous system that occurs in old age and pre-geriatrics and is characterized by progressive cognitive dysfunction and behavioral impairments. The main manifestations of the patient are cognitive dysfunction and non-cognitive neuropsychiatric symptoms, which can lead to the symptom of repeating a question many times. If the patient has the symptom of repeating a question many times, he/she should go to the hospital in time and ask the doctor to treat him/her according to the specific situation.