Schizophrenia is the most serious of mental illnesses, and schizophrenia has a long treatment time and a high likelihood of recurrent episodes; long-term use of medications for schizophrenia has adverse effects on certain parts of the body, so family members worry about the patient’s physical condition; therefore, some dietary considerations are given. Psychiatric patients are used to a high-calorie diet and should actually control the intake of a high-calorie diet. High-calorie food increases the oxidation of brain cells, impairs memory affects the decline in academic performance, and irritability follows; plus schizophrenic patients do not exercise and tend to gain weight, causing diabetes and hypertension, even without medication, so it is important to control the high-calorie diet. For patients who do not talk, nor eat or drink, and do not exercise, we should persuade them to eat, and if necessary, give nasal feedings of fluids, such as soy milk, milk, thin rice, juice, and vegetable juice; and put some meals next to the bed so that they can eat and drink without anyone else. Patients with delusional disorder choose to go on hunger strike because of distrust, we should persuade them to eat and drink, and choose some sealed food if necessary, or choose a trusted family member to make some food that meets the taste, but pay attention to some contraindications. Anti-psychotic drugs are generally to improve the condition to enhance appetite, some patients do not know hunger and satiety, and eat more at one time, so we should be regular and quantitative in diet. Patients with anxiety, panic and irritability can use lily, boil it with the right amount of water, and finally add some rock sugar to taste, and take it twice a day. Patients with palpitations and anxiety can use some wolfberries, which can be eaten raw or boiled with the right amount of water. Patients with schizophrenia should not drink alcohol, which increases excitatory neurotransmitters and causes oxidative damage; they should not smoke, which increases norepinephrine, which increases somatic metabolism and causes neuronal destruction. Avoid spicy and stimulating diet, forbid tea and coffee, etc. Patients with schizophrenia should eat more bananas, which are a major source of tryptophan and vitamins and B6, all of which can help with serotonin production, in the brain, and reduce anxiety. The use of bananas in moderation has a good therapeutic effect on the patient’s brain, in terms of healing. Drinking plenty of water and making sure you are hydrated every day can avoid constipation and keep your bowels open for the elimination of toxic substances. In our life everywhere, but also can not be ignored they can be okay to help patients restore health, that is, spinach and onions. Spinach is known to be rich in nutrients, rich in magnesium, vitamin C and nutrients needed by the body; magnesium is a mineral that can relax people and their bodies. Also onions dilute the patient’s blood and can increase oxygen to the brain to eliminate excess stress and mental fatigue, but they should not be consumed in excess. To get a schizophrenic patient to eat it is first necessary to gain the patient’s trust and care to understand the patient’s needs. Ensure that the patient’s diet is reasonable and nutritionally complete.