The study on the supply chain management and guidelines to increase the value of agricultural waste materials, specifically rice straw, aimed to analyze the rice straw supply chain management model and create management guidelines to enhance its value. The research involved interviewing farmers who were members of large rice production groups that had purchased rice straw balers under the project to upgrade large plots with modern agriculture and market linkage in 2021. The study focused on 49 plots of first-season rice in the 2022/23 crop year and off - season rice in 2022, including 147 sample farmers involved in rice straw management, 2 5 processors/collectors, and 25 users in Phitsanulok, Sukhothai, Uttaradit, Phrae, and Nan, totaling 197 cases.