Pneumoconiosis is a very serious chronic disease that cannot be cured at present. Based on my research, there are nearly one million people suffer from pneumoconiosis in China and the government spends a large amount of money on them, which brings great pressure to the society.According to my reasearch, with the development of the technology and awareness, most workers know they need to wear masks. However,most of them don't know they need to change masks termly and when they need to change masks.My design tries to improve their awareness and protect them from dust better.