This paper analyzes the differences of tourism quality, development quality of tourism destination and development quality of tourism industry including their different concepts, elements, evaluation and management. Literature review is the main study tool accompanying with a lot of empirical thinking. This paper also points out that quality is an important guarantee for a sustainable future of tourism development. In short, quality is competitiveness. An integrated theory framework of development quality of tourism industry is given accordingly, i.e. a "scales-effects-types" theory framework. The "scales-effects-types" theory framework contains three basic proposed views:Firstly, evaluation of development quality of tourism industry should contain a combination of quantitative and qualitative analysis. Secondly, the management of development quality of tourism industry is based on the idea of sustainable tourism development. Thirdly, improvements and optimizations of development quality of tourism industry is not just a practical and concrete practice of sustainable development, but also an exploration of the optimal tourism development model.