In the discussion on the origin of the word SPA, there is a word that runs through it, that is "hydrotherapy", which reflects the important role of water in the ancient treatment field and early European SPA culture. Most people think that the word SPA is the initial combination of some Latin phrases, such as "sanitasperaquam", "Solusosperaquam" and "sanusperaquam". These phrases all mean "treat with water". Another way of saying this is that hot springs originated from the graffiti "salutperaquam" in Roman bathrooms.