service industry. Hotels belong to the service industry, which belongs to social service industry or accommodation and catering industry. This is based on the standard of industry classification, that is, the detailed division of the organizational structure system of business units or individuals engaged in the production of the same nature in the national economy or other economic and social activities. As a typical reception service industry, hotels provide people with catering, accommodation or a combination of catering and accommodation to meet people's social, economic and living needs.