Abstract:Since the 18th National Congress of the Communist Party of China, innovation has become an important development idea and direction of our country. Scientific research institutes are the source of original innovation, while forest and grass research institutes are the core source and main battlefield of scientific and technological innovation in the field of forest and grass, which undertakes the mission and responsibility of achieving high-level scientific and technological self-reliance. This paper takes the factors affecting the improvement of scientific and technological innovation ability of forest and grass scientific research institutions as the research object, based on clarifying the basic connotation of the improvement of scientific and technological innovation ability, using literature review, on-the-spot investigation and expert consultation, this paper makes a comprehensive consideration on the development status and evaluation objectives of scientific and technological innovation in forest and grass research institutions. This paper selects relevant indicators from many levels to carry out research, summarizes the system of factors affecting the improvement of scientific and technological innovation capability of forest and grass scientific research institutions, and determines the evaluation model of scientific and technological innovation capability of forest and grass scientific research institutions. Finally, the DEMATEL-AISM method is used to quantitatively identify the relevant influencing factors, and make clear the interaction and hierarchical relationship among the factors that affect the scientific and technological innovation capability of forest and grass scientific research institutions. Based on the derivation results of this model, the evaluation results of the model are analyzed, which provides a theoretical basis and reference for improving the scientific and technological innovation ability of forest and grass scientific research institutions.