The objectives of this research were to study the following: 1) characteristics of basic personal, economic, and social data; 2) the potential of ecotourism sites and the ecotourism management model; 3) factors affecting the ecotourism management model with community participation, and 4) problems, obstacles, and suggestions about ecotourism management with community participation. The sample used in the study comprised 289 people living and working in the Nam Et-Phou Louey National Park. Data were collected through interviews and analyzed using descriptive statistics (percentage, mean, and standard deviation) as well as inferential statistics (multiple regression analysis) to identify factors affecting the ecotourism management model with community participation. The study found that 56.4% of respondents were male, with an average age of 38.85 years old and a primary education level of 37.7%. The majority of respondents were marital status at 81.3% and engaged in agriculture at 67.5%, with an average income of 1,011,863 Kips/ month. Moreover, most of them had resided in the community for over 20 years old at 60.9%. Nearly half of the tourists visiting Nam Et-Phou Louey National Park came with their families or relatives (46%). Most of the tourists expressed a high level of satisfaction with the Nam Et-Phou Louey National Park at 93.8% and most of them would indicate a willingness to revisit Nam Et-Phou Louey National Park at 95.2%. Furthermore, most of them have given the overall level of ecotourism potential in all aspects at a high level of agreement with a total average of 3.84.