The utility model discloses a strengthened gas phase extraction repair device and a small scale device thereof suitable for soil polluted by chlorobenzene. The strengthened gas phase extraction repair device comprises a plurality of heating extractors arrayed in a regular triangle or square mode. Each heating extractor comprises a heating source and an extraction tube. The heating sources are arranged in the extraction tubes and are resistance wires. Padding and catalysts are placed in each extraction tube. An opening hole is formed in each extraction tube shell. Grids are arranged on the inner walls of the extraction tubes. Extraction connection tubes of all the heating extractors are connected together and connected with a condensation unit, a gas-liquid separator and a vacuum pump sequentially. The small scale device comprises a container for containing the soil and two thermoelectric couples, wherein the heating extractors are arranged in the center of the container, one of the thermoelectric couple is inserted into the extraction tubes, the other thermoelectric couple is inserted into the container, and two temperature value controllers are connected with the two thermoelectric couples. A gas valve is arranged on the bottom of the container. The extraction connection tubes are connected with the condensation unit, the gas-liquid separator and the vacuum pump sequentially. The effect of repair to the soil polluted by the chlorobenzene in short time is obvious, and a pollutant removal rate is high.