The symptoms of memory disorders mainly include the following: 1, memory weakening: the overall weakening of the memory process, most commonly seen in organic brain mental disorders, such as dementia patients can appear, but also seen in normal elderly people; 2, forgetting: including prograde amnesia, retrograde amnesia, psychogenic amnesia. Any inability to retain newly acquired information is called prograde amnesia. Although the patient can make a suitable response to new sensory information, it only appears when the stimulus is present, and once the stimulus disappears, the patient loses the ability to make a correct response within a few seconds, so the patient is prone to forget near things, while distant memories still exist. This disorder is mostly seen in patients with chronic alcoholism; normal brain dysfunction occurs before Some non-specific brain disorders, such as concussion, can cause this disorder; psychogenic amnesia has the characteristic of selective amnesia, that is, the things forgotten are selectively limited to painful experiences or things that can cause psychological pain, mostly after the occurrence of major psychological stress, which can be seen in 3. misconstruction: when the patient recalls the events he or she experienced, the memory of the place, especially the time, is wrong or confused, such as recalling what happened in this time period as something that happened in another time; 4. fiction: the patient forgets about something he or she personally experienced and fills in or replaces it with a completely fictitious story, with the subsequent conviction that some patients talk about most of the content It is mostly seen in patients with organic mental disorders, such as dementia or chronic alcoholism; 5. Latent memory: also known as distorted memory, patients recall other people’s experiences or what they have seen and heard as their own personal experiences, or recall their real experiences as the experiences of others they have seen and heard.