Water-based paint uses clean water as a lotion, which is harmless to human health. Oily paint uses banana oil and toilet water as diluents and contains a lot of harmful carcinogens such as benzene and xylene. Generally, water-based paint does not contain harmful substances, and can be used after painting, which is non-toxic and tasteless. It contains a strong pungent smell, which is unbearable and harmful to people's health.