This study proposes a simulation strategy that facilitates the continuous movement of rice grains. The study establishes a three‐dimensional model concerning multiple physical fields, including electromagnetism, heat, and mass transfer. It examines the effects of rice grain layer thickness and microwave intensity on the moisture and temperature of rice grains. The drying process is analyzed and studied through mathematical modeling, aiming to improve the efficiency of microwave drying of materials and the quality after drying. Abstract To comp...