In view of "Tourism Toilet Revolution" mentioning, tourism toilet became the hot topic of attention. Building a scientific and reasonable evaluation model is the key to evaluate the quality of the tourism toilet service. By using the analytic hierarchy process (AHP), integrating the thought of fuzzy comprehensive evaluation method, it constructed tourism toilet service quality fuzzy comprehensive evaluation system on the basis of setting up tourism toilet service quality evaluation index system by Matlab mathematical calculation tool; as well as this model makes an empirical analysis of in tourism toilet Changsha city. It concluded that tourism toilets in the aspects of number, layout, equipment, environment construction, and management need to optimize the conclusion as follows: the number must be properly enough, the proportion need to appropriate, layout should be reasonable, the equipment should be improved, the environment should be clean and free from smells, adhere to the combination of construction and management which is given priority to.