Hallucinations can be classified as auditory hallucinations, visual hallucinations, taste hallucinations, and so on. Hallucinatory taste, or taste hallucination, is a kind of illusory taste perception, in which a certain taste does not exist in objective reality, but the patient perceives its existence. It is rare and often coexists with phantom smells or other hallucinations. The patient feels that he or she tastes a particular flavor when eating or drinking, which often causes refusal to eat. Seen in temporal lobe epilepsy and schizophrenia. 1, schizophrenia Mostly disgusting odors, such as the smell of blood, the putrid smell of corpses, rotten eggs, but also aromatic and pleasant odors, such as a patient who firmly believes in the smell of coal, saying that someone has intentionally put gas into the room in an attempt to kill him. 2, temporal lobe epilepsy (temporal lobe epilepsy) phantom sniffing is a typical aura of temporal lobe epilepsy, often with the smell of some unpleasant odor as the aura of seizures, such as the smell of blood or burning smell. 3. Depression is less common. For example, some patients are convinced that they smell an odor, yet it is difficult to determine whether they actually smell the odor or not, because these patients base their thoughts only on the actions of others, believing that others wrinkle their noses and make coded signals, indicating the presence of an odor. Phantom smells are less common in psychiatric patients. Patients often taste food and drinks with some special, unpleasant and unacceptable taste, on the basis of which the patient often develops delusions of victimization and affects the patient’s behavior. Patients often have delusions of victimization based on these delusions and affect their behavior, such as refusal to eat and aggressive behavior. The patient tastes a special or peculiar taste in food, such as metallic or medicinal taste, and therefore refuses to eat. This is often combined with other hallucinations and delusions. 1. The gustatory nervous system is overly sensitive. 2, Gastrointestinal digestive system disorders. 3, due to stress and poor rest.