To provide a combined contaminated soil cleaning apparatus performing cleaning of the soil combined-contaminated by heavy metal, a volatile organic compound (VOC) such as a light oil having a low vaporization temperature, trichloroethylene and benzene, dioxin or the like.

The combined contaminated soil cleaning apparatus is constituted by a rotatable cylindrical heating stirring crushing part 7 for heating, stirring and crushing the combined contaminated soil (SAo); a classification part 10 for classifying the crushed soil by a particle diameter; a drying/sorting device 3 in which a heating device 5 for feeding hot air to the heating stirring crushing part and a fixing casing 12 covering the heating stirring crushing part and the classification part are integrally constituted; an air discharge device 42 for sucking dust in the fixing casing; a dust collection duct for discharging the dust in the fixing casing to the outside; a bag filter 40 communicating with the dust collection duct; and a washing device 25 for washing the soil, of the combined contaminate soil classified by the classification part, having a remaining contamination exceeding a reference value with water.