Toluene is a volatile chemical, there may be excessive exposure to toluene in daily house renovation, the hazards are as follows: 1, the impact on the skin, eyes and upper respiratory tract, the emergence of allergic eczema, conjunctival congestion, pharyngitis, irritation of bronchitis formation. If there is a history of chronic obstructive pulmonary disease and asthma, it can induce an acute attack, with obvious symptoms of chest tightness and dyspnea, often accompanied by dizziness, headache, nausea and other discomfort. 2, affect the bone marrow hematopoietic system, with a decline in white blood cells, platelets, and even the formation of reocclusion. 3, individual patients due to the large amount of inhalation, long time, the performance of toxic pneumonia, often with chest tightness, chest pain, severe 4, the impact on pregnant women is also great, can lead to miscarriage and fetal malformation. Therefore, there are many hazards of inhaling too much toluene, so we should try to avoid and protect ourselves accordingly.