The invention relates to the field of chemical engineering metallurgy, in particular to a system and a method using a nickel laterite ore reduction reaction. Aiming at the defects in the prior art, the invention proposes a reduction reaction system and a method of a nickel laterite ore water-contained pellet. The system and the method improve a heating mode of a segmented rotary hearth furnace device to remove a pellet drying process before the segmented rotary hearth furnace device under the precondition of not influencing product indexes so as to shorten the process flow and to reduce the equipment investment, and have such advantages as short treatment flow, low equipment investment, high equipment operation rate, low energy consumption and wide application range.