According to epidemiological statistics, the natural incidence of leukemia in China is about 4/100,000, and there are now about 4 million patients; of the approximately 40,000 new leukemia patients each year, 50% are children, most of whom are 2 to 7 years old. All indications are that decoration pollution is the culprit of childhood leukemia, which is due to the imperfect development of the hematopoietic system and poor immunity of children, who are more susceptible to adverse triggers than adults. Among the children who have been seen with leukemia, it was found that nearly 90% of children’s homes have been renovated in the short term, and some homes are “luxuriously decorated”. Now that winter is in full swing, especially with the Chinese New Year coming up in 2 months or so, more families are busy decorating and want to celebrate the Spring Festival in their new homes. The following discussion will focus on the dangers of winter decoration and leukemia. Winter decoration pollution is more serious than summer, and more harmful to the human body. There are several reasons for this: 1, construction, decoration and furniture generated by harmful gases: such as formaldehyde, ammonia and benzene than in the summer, and because of the cold weather in winter, people spend more time indoors and less time outdoors, resulting in indoor pollutants on the human body than the summer increase. 2, ventilation time is greatly reduced: winter people pay more attention to indoor insulation, especially in the north, making indoor ventilation is insufficient, constantly evaporated formaldehyde, benzene and other harmful gases can not be discharged and accumulate indoors. According to the survey, in the case of poor ventilation, the degree of indoor air pollution in winter can be tens of times more serious than outdoor, so the harm to the human body is self-evident. 3, the indoor temperature is high, dry air: because of the widespread use of heating in the north, the indoor temperature is high, the air is also dry, like this high temperature and dry environment accelerates the volatilization of formaldehyde, benzene and other harmful gases. 4, eager to move into the new house: In addition, many people want to move into the new home as soon as possible, in a bright and spacious new home for the New Year, so just after renovation is eager to move in. This is undoubtedly fatal for those with poor resistance, especially for children and pregnant women How to prevent To reduce indoor air pollution caused by renovation, consumers must strengthen the “green home” concept to control indoor pollution from the source. In terms of decoration materials, environmentally friendly materials should be used as much as possible; in terms of design, do not just pursue luxury decoration, should be as much as possible to use energy-saving materials, fully consider the indoor space bearing capacity and ventilation. It is worth noting that indoor environmental pollution caused by substandard building materials also has long-term characteristics, slow release of pollution caused by can last from 4 to 15 years, and difficult to detect, so do not rush to move into the newly renovated house, generally within six months of renovation to avoid children moving in, after moving in to ensure a certain amount of ventilation time. If an abnormal smell is found in the house, it is recommended to ask the relevant departments to conduct indoor environmental testing. Leukemia starts rapidly, about 66% of patients start within a month, the condition is urgent and develops quickly. Anemia is a common and early symptom of severe progressive anemia. 2.Fever Fever is the first symptom in 50% to 84% of patients, and the fever type is variable. Bleeding Bleeding sites can be all over the body, with bleeding from the skin, gums, oral cavity and nasal mucosa being the most common, followed by bleeding from the gastrointestinal tract, urinary tract, uterus and respiratory tract. 4.Liver and spleen enlargement are most common, and acute lymphoblastic leukemia is significant. 5.Lymph node enlargement, mostly confined to the neck, axilla and groin. 6.Knocking pain and pressure pain at the lower end of the sternum, soreness or hidden pain in the joints of the limbs, and joint swelling in severe cases, some patients may cause osteoporosis, osteolytic destruction, or even pathological fracture. 7.Neurological manifestations It can be manifested as meningitis, hydrocephalus and intracranial hypertension symptoms.