Paint mainly contains formaldehyde, xylene, toluene and other substances, all of the above substances will cause harm to the human body, such as causing keratitis, fetal malformation, aplastic anemia and other diseases. 1. Formaldehyde: acute formaldehyde poisoning is mainly on the eyes and respiratory tract stimulation, and then appear keratitis, chemical burning respiratory tract and other diseases. Chronic formaldehyde poisoning is easy to cause fetal deformities, and even induce cancer of the digestive tract and respiratory tract, such as lung cancer, liver cancer, pharyngeal cancer and other diseases. 2. Benzene: Chronic benzene poisoning mainly affects the human hematopoietic system and nervous system. For the hematopoietic system, benzene poisoning can easily inhibit bone marrow hematopoiesis and induce gene mutation. Therefore, paints can easily lead to aplastic anemia, acute leukemia and other diseases. Paint easily damages the peripheral nerves of middle-aged and old people, resulting in tinnitus, headache, diplopia, dizziness and other symptoms. Paint is more harmful to the human body. Therefore, newly applied paints in the residence or working environment should be thoroughly ventilated for at least three months before use, so as to prevent paints from causing harm to the human body.