With the internationalization of tourism and diversification of the supply and demand of the market, hospitality industry appears to be diversified accordingly. The term of "hospitality industry" was originated from the Table of Special Industries and Commerce regulated in the Social Order Maintenance Act, and was defined as businesses providing rooms, beddings or places to unspecified people for lodging or resting (such as hotels, hostels, inns, guesthouses, etc., but not including tourist hotels). Nevertheless, in Taiwan the related legal system is incomplete, thus creating a lot of loopholes in management of the above businesses and causing public security problems. In Japan there are detailed legal regulations for hospitality industry. Therefore, the paper focuses on introducing the hospitality industry in Japan, including the regulations for B&Bs and hotels, as well as the regulations for different operators, such as ways of declaration to government departments, usage of building, room floor area, limit on the number of staying days, and administrative inspection. It is hoped that through understanding of the related laws of Japan, they can serve a reference for amending Taiwan's management system of the hospitality industry, and then the lives, bodies and properties of people can be protected.