This paper studies the integration and development of rural tourism and cultural preservation and inheritance, aiming to explore new development paths for rural tourism. This paper first introduces the basic algorithm and steps of plain Bayesian, and the fusion improves the principal kernel components of the Bayesian model. Using the improved plain Bayesian model to analyze rural tourism and traditional culture protection and inheritance, the problems in the integration process are analyzed from the rural cultural tourism situation, the integration of rural tourism and cultural protection and inheritance, as well as the proposed integration development countermeasures and the construction of the integration development path. In the study of the integration situation, the single indicator of infrastructure construction under the development level system reaches 0.9578, ranking first in the ratio of all three indicators, indicating that infrastructure construction is the most important factor affecting tourism development. Policy support and the construction of the six elements of tourism ranked second at 0.453, indicating its importance. Regarding countermeasures, 90% believe that cultural heritage buildings should be protected, 95% believe that cultural connotations should be deeply explored, and 85% believe that the integration of culture and tourism should be strengthened. Integrating rural tourism and traditional culture preservation is a long-term process that requires continuous exploration and improvement.