At present, there are many factors that cause blood diseases, such as: chemical factors, physical factors, biological factors, genetics, immunity, etc., which can be the causative or direct cause of the development of blood diseases. Since many of these causes are the products of modern industry in recent decades, thus the incidence of blood diseases has a trend of increasing year by year, it can be said that blood diseases are a modern disease. The common symptoms of blood disorders are mainly anemia, bleeding and infection. For the above symptoms, patients should pay attention to self-protection in daily life. I. Self-protection of anemia 1. When anemia is severe, bed rest should be taken and activities should be limited, especially not to get up or stand up too fast to prevent sudden fainting due to cerebral ischemia. 2. Pay attention to the symptoms of anemia such as the pallor of the face, lid conjunctiva, lips, nail bed, dizziness, tinnitus, drowsiness, palpitations, shortness of breath, headache, pain in the precordial area, etc., and reflect your discomfort to the doctor in time, if the symptoms worsen, blood transfusion treatment should be given in time. 3.Eat high-protein, high-vitamin food, such as lean meat, pork liver, beans, fresh vegetables, etc. Avoid eating raw and cold, overnight or spoiled food. 4. Stay away from ionizing radiation, do not use or abuse drugs at will, and pay attention to keeping warm to prevent infection caused by cold. Second, bleeding self-protection 1, to adjust the mind, to prevent excessive tension, to maintain emotional stability. 2, pay attention to rest, obvious bleeding, especially thrombocytopenia, should be absolutely bedridden, and gradually increase the activity after the bleeding stops. According to the condition of appropriate activities, activities to prevent slipping or trauma to avoid bleeding after injury. 3.Forbid to use hard-haired toothbrush to brush teeth and toothpick to pick teeth, eat slowly to avoid damage to oral mucosa and gums; if the nasal mucosa is dry, apply nasal oil drops for protection, forbid to dig nostrils to avoid damage to nasal mucosa and cause bleeding; male patients shaving is best to use electric razor to avoid skin damage. 4. Compress the needle eye for 10-15 minutes after various punctures are completed during hospitalization to prevent local hematoma formation. 5, pay attention to dietary hygiene, avoid spicy, stimulating, coarse and hard food and seafood hair, to light and easy to digest, high protein, high vitamin, low-fat diet, appropriate consumption of jujube yam porridge, turtle soup, pork ribs soup, etc.; with gastrointestinal bleeding should be fasted, after the cessation of bleeding into cold, warm liquid, and later gradually give semi-liquid, soft food, universal food. 6. Pay attention to the presence of skin and mucous membrane petechiae, gum bleeding, nasal bleeding, vomiting blood, blood in stool, hematuria, whether female patients have excessive menstruation, especially pay attention to the presence of headache, vomiting, blurred vision, impaired consciousness and other symptoms, if any, should be promptly reported to the doctor for treatment. Self-protection for low leukocytes 1. Clean and sanitary living environment, clean indoor garbage in time to prevent bacterial growth; pay attention to the ventilation of the room to keep the air fresh; limit the number and time of visitors during hospitalization, go to less or no crowded places, protect isolation when the leukocytes are too low, and enter a sterile clean laminar flow room or use a laminar flow bed if possible to prevent cross-infection. 2, keep the bed linen neat and dry; keep the skin clean, diligent bathing, dressing, nail clipping; pay attention to oral hygiene, rinse the mouth after meals before bed; pay attention to perianal cleanliness, sit in the bath after the stool (available 1: 5000 potassium permanganate solution sit in the bath), female patients pay attention to perineal cleanliness. 3, daily life according to the weather changes in a timely manner to increase and reduce clothing, to avoid cold; wear a mask when going out for self-protection, to avoid respiratory infections; high fever to give warm water bath or ice pack cold compress, drink more water, you can add the right amount of sugar, salt in the water, both to prevent dehydration, but also to supplement carbohydrates, avoid eating spicy food, such as seafood, mutton, dog meat and spicy stimulating food. Fourth, the psychological self-adjustment General patients are diagnosed with blood disease, prone to anxiety, nervousness, panic, these symptoms are understandable, but after that should be as soon as possible to adjust the mentality, with doctors to do a good job of treatment. Hematology is not a completely invincible disease, at present, many medical workers around the world are working hard to overcome hematology, and from time to time, new results have been released, human beings are closer and closer to the goal of completely curing hematology. Of course, overcoming hematological diseases will be a hard journey, must build up the confidence to overcome hematological diseases, mobilize their own resistance to disease, some patients with hematological diseases, especially early and early hematological diseases can obtain good results. Many patients have already been cured and given a new life after treatment. Countless facts prove that a positive mindset can promote the recovery of the disease, while a negative mindset leads to the deterioration of the disease.