With rice bran as raw material, production of sitosterin in multi-joint-products technological system as "4-joint-products" or "9-joint-products" project of paddy rice chemical factories will enjoy a relatively larger profit margin. 以米糠为原料,在水稻化工厂“4联产”或“9联产”等多联产技术系统中生产谷甾醇,其利润空间较大。