Put forward the understanding of ecological security of tourism should be closely integrated regional objects，Establish the concept of regional background feature has a decisive role in the various factors of assessment of tourism destination ecological security. The expression of tourism destination tourism ecological security is clarified. According to the current state of social, economic and tourism industry and the ecological environment background characteristics of the East Dongting Lake tourist destination, Diagnostic system of tourism destination ecological security. And make relatively accurate evaluation of the security state. Diagnosis of the East Dongting Lake tourist destination tourism ecological security is in a relatively secure state, at the same time should be brought to society, government, tourism industry of great concern.