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An efficient postharvest system aims to minimize the loss and obtained the good quality rice gain. This review summarizes the information regarding the postharvest processing published by various authors and outline the evidence that support the impacts of the postharvest handling on rice grain quality. Grain quality, includes a summary of the physical and chemical characteristics of rice grain. It has many components such as nutritional value, appearance, cooking and eating quality. Drying of rice mainly affects the milling quality, as most breakage of rice occurs because of grain fissuring. Rice ageing occurs during storage is responsible for the changes in pasting properties, color, flavor and chemical composition such as starch, protein, lipid etc. that affect rice quality. Therefore, research on various drying methods, storage conditions and milling methods should be maximized and maintain the desired rice grain quality. This review may contribute to understand the impacts of postharvest processes on grain quality and can increase the head rice yield.