NOVELTY - A production system of rice origin products such as rice straw, chaff, rice bran, and polished rice produced from rice, comprises methanol producing unit, ethanol producing unit, lactic acid producing unit, fats-and-oils producing unit, biodiesel fuel (BDF) methyl producing unit, BDF ethyl producing unit, methyl lactate producing unit, and ethyl lactate producing unit.    USE - The production system is useful for rice origin products such as rice straw, chaff, and bran (claimed).    ADVANTAGE - The production system uses synthetically each component produced from rice.    DETAILED DESCRIPTION - A production system of rice origin products such as rice straw, chaff, rice bran, and polished rice produced from rice, comprises methanol production unit to manufacture methanol from rice straw, chaff, rice bran, and polished rice, ethanol production unit to manufacture ethanol from the polished rice, lactic acid production unit to manufacture lactic acid from polished rice, fats-and-oils production unit to manufacture fats and oils from the bran, biodiesel fuel (BDF) methyl production unit to react methanol manufactured by methanol production unit and fats and oils manufactured by fats-and-oils production unit, and to manufacture biodiesel fuel, BDF ethyl production unit to react ethanol manufactured by the ethanol production unit and fats and oils manufactured by the fats-and-oils production unit, and to manufacture the biodiesel fuel, methyl lactate production unit to react the methanol manufactured by the methanol production unit and lactic acid manufactured by the lactic acid production unit, and to manufacture the methyl lactate, and ethyl lactate production unit to react ethanol manufactured by the ethanol production unit and lactic acid manufactured by the lactic acid production unit, and to manufacture the ethyl lactate. INDEPENDENT CLAIMS are included for the following:    (1) method for producing rice origin products such as rice straw, chaff, bran, and polished rice produced from rice, involves producing methanol from rice straw, chaff, bran, and polished rice, producing ethanol from the polished rice, producing lactic acid from polished rice, producing fats-and-oils from bran, producing BDF methyl by reacting methanol and fats and oils to obtain biodiesel fuel, producing BDF ethyl by reacting ethanol and fats and oils to obtain biodiesel fuel, producing methyl lactate by reacting methanol and lactic acid, and producing ethyl lactate by reacting ethanol and lactic acid;    (2) production planning system of rice origin products such as rice straw, chaff, bran, and white rice generated from rice as a raw material, comprises production planning system of rice origin products for producing production and marketing planning, priority information which represents the priority of the each first product and the priority of the each second product to manufacture, availability information which represents the stock status of each raw material, the each first product, and the each second product, seasonal variation information which represents a seasonal variation of the amount of supply of each raw material, market price information which represents a market price of the each second product, manufacturing-cost information which represents a manufacturing cost of the each second product, competing-goods information which represents prices of competing goods of the each second product, storage index information including the ease of storage form of each raw material, the each first product, and the each second product, a savable period, and storage, storage unit to store the information beforehand, calculating unit to calculate the throughput and delivery date of each primary products and each secondary product based on the priority information stored by the storage means, profits judging unit which judges whether profits occur or a loss occurs based on the market price information memorized by the memory measure, the manufacturing-cost information, and the competing-goods information when the each second product is sold, an adjustment instruction unit to direct change of the quantity of production of the each first product and the each second product, storage, or sale based on the storage index information memorized by the memory measure when judged with a loss occurring in the profits judging unit, when change of the quantity of production of the each first product and the each second product is directed by the adjustment instruction unit, an output adjustment unit by which storage changes production into easy primary products or a secondary product for difficult primary products or a secondary product, and storage computes again the quantity of production of the each first product and the each second product based on storage index information memorized by the memory measure, planning-of-production preparing unit which draws up planning of production based on the quantity of production and a delivery date of the each first product and the each second product which are computed by the quantity-of-production calculating unit or the output adjustment unit, where primary products includes methanol, methane gas, fuel, compost, sugar liquid, and lactic acid, and secondary products includes biodiesel fuel, ethyl acetate and methyl lactate; and    (3) method for performing production-planning of rice origin products, using above-described production planning system of rice origin products.