Dietary requirements: leukemia patients due to hypermetabolism, need to give high-calorie, high-protein, rich in vitamins, minerals and easy to digest diet to supplement the body heat and various nutrients consumption. Especially during chemotherapy, patients often have a loss of appetite, bloating, diarrhea, nausea, vomiting and other digestive reactions, attention should be paid to the color, aroma, taste, type of dishes, in order to cause the patient’s appetite. Dietary therapy for mental disorders should pay attention to nutritional supplementation and fasting. Nutritional supplementation can eat more food rich in vitamin B group, calcium and magnesium, l-tyrosine, vitamin C, fiber, lecithin and other substances. Dietary contraindications should pay attention to avoid cola, fried food, junk food, sugar, white wheat flour products, taro chips and other easy to stimulate the body’s food; avoid caffeine, fenugreek cigarettes, alcohol, drugs and so on. Dietary care for mental disorders 1, by delusion dominated by the suspicion that the food is poisonous and refused to eat, you can let the patient to participate in the sharing of meals, but also to let him eat with other patients, and allow him to choose the meal, but also in front of the patient’s face to taste a few mouths of the patient’s meal, in order to increase its sense of security. 2. For patients with guilty delusion, the meal can be stirred up so that he can think that it is residual food and eat it. Management should be strengthened, and the greasy bucket should be placed outside the patient’s reach to prevent the patient from eating leftovers, dirty food and somatic diseases. 3, the emotional depression, poor diet of the patient, should be persuaded to understand the patient’s state of mind, to give care and sympathy, to talk about the beauty of life, to improve the interest in life, and try to persuade the patient to eat automatically. Should choose easy-to-digest food, pay attention to the color, aroma and taste of food to stimulate the appetite, and strengthen the inducement, with the language to promote appetite, eating with others and feeding and other methods to increase the patient’s interest in eating. 4.Excited patients should share meals with other people, keep the eating environment quiet, try to avoid the stimulation of the external environment, so that they can eat at ease, and have someone to take care of them, and if necessary, can be given to feed. 5.For patients who cannot take care of themselves with too much food, they should be managed by special person, avoiding food with thorns and bones. The food should be soft, easy to digest, at a suitable temperature, and the patient should be advised to chew and swallow slowly to prevent choking on the food. It is forbidden to give patients too hard food and fruits. For overeating patients, we should control their diet appropriately, control the amount of food when preparing meals for them, and prevent patients from asking for food from others. 6, hypochondriacs or hypochondriac delusion patients, that their gastrointestinal tract is sick or suffering from incurable diseases, or even the gastrointestinal tract has been ulcerated and can not eat, can be implied that the disease has gradually improved, and adjust the diet of the colors, varieties, such as milk, soft rice, etc., so that the patient is easy to accept.