The data for this research were collected by the interview in mountainous national parks, Mt. Sorak and Mt. Songni. F-test was applied to analyse the significant differences among the activities in the park by the type of accommodations and by the purpose of visits. Each demand functions for the whole tourism and recreation experiences of these national parks were derived through the use of OLS regression method after multiplying the square roots of the populations to variables. Explanatory variables were round-distance, population, and per capita Local tax. Demand functions for each national parks were also taken by the regression. Finally the tourism and recreation values of each parks per user. day and for October of 1982 were estimated by the main activities of the users. The main results of this study are summarized as follows: 1. In Mt. Soˇrak and Mt. Songni National Park, demands for each parks differed significantly at 1% level by the type of accommodations and by the purpose of visits. 2. In Mt. Soˇrak and Mt. Songni National Park, most of the demand functions for the whole experience of the users for each parks were well fitted by the variables of round-distance and population. 3. In Mt. Soˇrak and Mt. Songni National Park, most of the demand functions of the users for each parks by the type of accommodations and by the purpose of visits were well fitted by the added costs. In both parks, demand functions for parks were well fitted when the number of users was in the form of natural logarithms. 4. In Mt. Soˇrak National Park, the users by the type of accommodations valued in km the park per user.day and for October of 1982 as follows: (도표) 5. In Mt. Soˇrak National Park, the users by the purpose of visits valued in km the park per user. day and for October of 1982 as follows: (도표) 6. In Mt. Songni National Park, the users by the type of accommodations valued in km the park per user. day and for October of 1982 as follows: (도표) 7. In Mt. Songni National Park, the users by the purpose of visits valued in km the park per user. day and for October of 1982 as follows: (도표)