Thailand, along with an examination of the medicinal plant’s habitat. Data regarding knowledge of medicinal plants was obtained from interviews of 4 herbalists, 58 villagers, and 30 postpartum women using questionnaires. Second, experimental research was performed to determine the chemical compounds of the medicinal plants (using phytochemical screening) along with the biological activities of selected plants in the recipe with the highest potential. The results of the laboratory research were used to confirm the usefulness of medicinal plants traditionally used by the Mien and improve their conservation methods. The implementation of the conservation project was the last part of the project. This part used participatory action research by triangular validation and was followed by meetings for brainstorming. Data of the medicinal plants habitat from the surveys, and scientific data from both literature reviews and laboratory studies were combined and then provided to the community to find the best way to conserve the knowledge of medicinal plants, their habitat and for sustainable use of medicinal plants in the community.