NOVELTY - A biomass production system has an alcohol production system and a biomass plant. The biomass plant has an aquaculture apparatus which grows root vegetable, a fertilizer liquid supply apparatus, a carbon dioxide gas supply apparatus, and an air conditioner. The fertilizer liquid supply apparatus supplies liquid which dissolves fertilizer in water with respect to aquaculture apparatus. The alcohol production system has a sugar solution-manufacturing apparatus, a fermentation apparatus, an extracting device, water treatment apparatus and combustion apparatus.    USE - Biomass production system is used for producing biomass (claimed).    ADVANTAGE - The biomass production system has excellent compatibility and workability, and is economical.    DETAILED DESCRIPTION - A biomass production system has an alcohol production system and a biomass plant. The biomass plant has an aquaculture apparatus which grows root vegetables, a fertilizer liquid supply apparatus, a carbon dioxide gas supply apparatus which supplies carbon dioxide gas to the aquaculture apparatus, and an air conditioner. The fertilizer liquid supply apparatus supplies liquid which dissolve the fertilizer in water with respect to aquaculture apparatus. The alcohol production system has a sugar solution-manufacturing apparatus, a fermentation apparatus, an extracting device, water treatment apparatus and a combustion apparatus. The sugar solution-manufacturing apparatus manufactures aqueous solution containing water and saccharide to transfer root vegetables grown with aqueous culture apparatus to fermentation process. The fermentation apparatus ferments sugar aqueous solution, and generates alcohol. The extracting device extracts alcohol generated from fermentation apparatus. The water treatment apparatus processes waste water from sugar solution-manufacturing apparatus, fermentation apparatus and extracting device, and supplies water to sugar solution-manufacturing apparatus, fermentation apparatus, extracting device and fertilizer liquid supply apparatus of biomass production system. The combustion apparatus burns waste material produced in the biomass production system and self-system.