Freshly renovated house, the content of various chemicals is high, if the time in the house is longer, it may cause headache, tearing eyes and other symptoms, which is caused by formaldehyde exceeds the standard, new furniture, all kinds of decorative materials such as formaldehyde containing high formaldehyde, formaldehyde can damage the function of the liver and kidneys, damage to the nervous system and the blood system and so on, the damage to the human body is greater, and also part of the allergy may be caused by a certain chemical composition. Common allergens are paint, dust mites, etc. Allergic reactions such as runny nose, headache, nasal congestion and hives can occur. After the house is renovated, it is recommended to open the windows more often to ventilate, do not move in immediately, the symptoms of headache, it is best to go to the hospital to check the blood routine, liver and kidney function, chest X-ray, etc., to see whether there is liver and kidney function damage, blood system abnormalities, etc., early treatment, if formaldehyde poisoning caused by the best to get out of the living environment.