Aphasia is a clinical condition in which there is an inability to recognize body parts and familiar objects through the organs in the absence of sensory insufficiency, mental decline, confusion, and inattention. It includes visual, auditory, tactile and body part recognition deficits. The patient is able to recognize an object through other sensory channels, but loses the ability to recognize the familiar object, the self or visual space through a specific sensory channel and the corresponding senses. This inability to recognize is not due to sensory, language, intellectual, or memory deficits, nor is it due to the patient’s unfamiliarity with the object, but is often caused by damage to specific functional areas of the cerebral hemispheres. Most manifestations of anosognosia are idiosyncratic. Like other functional brain abnormalities, anosognosia has asymmetries in both cerebral hemispheres. In summary, anosognosia is a condition in which a patient with brain damage has no visual, auditory, somatosensory, consciousness, or intellectual impairment, but is unable to recognize previously familiar objects by one sense, but can recognize them by other senses. For example, if a patient sees a watch and does not know what it is, but touches the shape of the watch and hears the sound of the watch moving, he immediately recognizes it as a watch. What are the prevention methods for anosognosia? Mainly for the treatment of the original brain disease and with rehabilitation training. 1, reduce intracranial pressure: ① dehydration treatment; ② cerebrospinal fluid drainage outside the body; ③ comprehensive preventive measures. 2.Surgical awareness treatment: ①tumor resection; ②internal decompression surgery; ③external decompression surgery; ④cerebrospinal fluid shunt. 3.Radiation therapy: Patients with intracranial tumor whose systemic condition does not allow surgical resection and who are sensitive to radiation therapy can adopt radiation therapy to delay tumor recurrence or inhibit tumor growth to prolong patient’s life. 4.Chemotherapy. 5.Gene drug therapy. 6.It is possible to consume more high fiber as well as fresh vegetables and fruits, with balanced nutrition, including protein, sugar, fat, vitamins, trace elements and dietary fiber and other essential nutrients, with meat and vegetables.