The study aimed to describe the alkaline treatment advantage to remove ash component from the natural rice straw. Most of the ash component in the rice straw is silica. High ash content is particularly harmful to cutting tools and in chemical recovery systems in the pulp paper industry. In this study, the silica content has been removed simply through immersion process in the 5% sodium hydroxide solution to obtain desilicated rice straw. The study revealed effectiveness of this alkaline process and compatible in commercial practice. The rice straw pulping is considered competitively to complement the global demand of raw material in paper making. Therefore, the treated rice straw plays role in providing raw material in the form of wood and rice straw blend feedstock for pulp and paper industry.