According to importance of Environmental resource in preservation of natural ecosystems and human life, restriction on destruction is necessary. Miankaleh wetland in Mazandaran province is the settlement of animal and herbaceous rare species. This research will discuss determination of preservation value in Miankaleh international wetland and measure of individual's willingness to pay (WTP) for Preservation benefits based on contingent valuation (CV) and questionnaire dichotomous choice. For measuring the individual's WTP, Logit model was used. The estimation parameters are based on methods of maximum likelihood. Results show that 68.3% individuals have willing to pay for preservation of the Miankaleh wetland. According to the results, by increasing one unit in Bid, probability of acceptance is decreased equal to 0.924 percentages for preservation of Miankale Wetland. The annual mean of WTP for Preservation of this wetland is US $ 0.74 per household and US $ 2271.74 per hectare. Most important effective variables are bid quantity, individual income, sex, education and jobs for preservation of this wetland. It can be concluded that by application of the results of this study, a suitable price policy can be taken for preservation of Miankaleh…