The utility model relates to an extraction device for contaminated soil, and in particular to a movable extraction device for contaminated soil. The movable extraction device for contaminated soil comprises a carrying vehicle, wherein a support force arm is movably connected to the carrying vehicle, and a lifting oil cylinder is fixedly connected with the support force arm and arranged on the carrying vehicle; a reaction container is fixed on the support force arm by a bearing, a feed-discharge opening is formed in the top of the reaction container, and a stirring device is arranged in a cavity of the reaction container and driven by a motor. With the adoption of the structure, the reaction container on the support force arm is driven by the lifting oil cylinder on the carrying vehicle to erect and fall down, thus increasing loading and unloading speeds, and due to the free entrance and exit of the carrying vehicle at a contaminated site, great convenience is brought to extraction of soil. The movable extraction device for contaminated soil is simple in structure, low in manufacture cost, and suitable for wide popularization; the reaction container is driven to rotate by the motor on a support table, thus avoiding the deposition of materials at the bottom of the container during reaction, and ensuring the full reaction of the materials.