Hygiene refers to collective life hygiene and production hygiene. Generally speaking, it refers to personal and social health measures taken to improve human health, prevent diseases, and improve and create a production environment and living conditions that meet physiological and psychological needs, including patriotic health campaigns centered on eliminating diseases and stressing hygiene. According to the research of medical history, "health" is a medical term, which means "keeping healthy". This word first appeared in the coffin, and the word "keeping in good health" also appeared in Zhuangzi Gengsang Chu: "Nan Rong said: I really want to hear the classics of keeping in good health." Others believe that the word "health" comes from Greek mythology. "health worker"