Organization theory and enterprise reengineering theory are two core theories in enterprise management. Among them, organization theory focuses on internal organizational structure, function distribution and personnel cooperation, while enterprise reengineering theory focuses on internal process reengineering, efficiency improvement and business strategy transformation. In hotel management, these two theories can be applied flexibly according to the actual situation of the company to optimize the management and operation mode of the enterprise. 1. Application of organizational theory First of all, hotels can adopt a clear division of labor and grading system, and set clear job responsibilities, so that each employee can consciously cooperate with others' work while clarifying his own job responsibilities and tasks, and improve the efficiency of cooperation. Secondly, hotels can adopt departmental management to achieve professional and refined management. For example, a catering department, a guest room department, a service department, a logistics department, etc. can be set up, so that each department has a clear responsibility, thus realizing the efficient operation of the whole enterprise. 2. Application of Enterprise Reengineering Theory Hotels can optimize processes, reduce costs and improve service quality through enterprise reengineering. For example, first, they can optimize the processes of room reservation, arrangement and cleaning, reduce manpower waste and improve efficiency. Secondly, we can clean up and rectify the interior of the hotel, reduce unnecessary material and manpower consumption, and improve the comfort and hygiene level of the hotel. Finally, by introducing advanced information management system, the hotel can manage the information of employees, inventory and materials in a unified way, and improve the overall management efficiency. In a word, the catering industry is a highly competitive and segmented market. The application of organization theory and enterprise reengineering theory will help to enhance the competitiveness and market share of catering enterprises and realize sustainable development and innovation.