[project] offer when cultivated plant, can inhibit the transfer to the radioactive cesium of plant, and safely cultivated plant, and provide the manufacturing method of the plant transfer inhibitor for the radioactive cesium that can be eaten in the soil containing radioactive substance caesium. After being added to the second molysite, alkalinity is added with pH3. in the iron sulfide mineral deposit mineral water containing the heavy metal other than the first iron and first iron in [solution]2 or more, keep the pH3.2 or more state, form the precipitating of the second iron of water oxygenization, solid-liquid removes the heavy hall of the water oxygen compound by separation, the a part for removing above-mentioned first iron and the heavy metal other than above-mentioned first iron, and remove using oxidant divalent iron included in the treatment fluid of the iron sulfide mineral deposit mineral water after the heavy metal other than above-mentioned first iron. With the second neutralizer in the second neutralizer and pH7.3-8.In 3 and pH7.3~8.3 neutralize in the second neutralizers second neutralize engineering, in the first neutralizer and pH4.0~4.5 the first neutralization engineerings neutralized. By the separation of solid and liquid engineering of the treatment fluid separating liquid separation after above-mentioned second neutralization engineering, and the manufacturing method of the plant transfer inhibitor including radioactive cesium. Scheme without selection
