Abstract: The present invention discloses a remediation simulator of deep petroleum contaminated soil and application. The remediation simulator comprises a contaminated layer box. A to-be-remedied soil sample is added to a remediation box of the contaminated layer box; uncontaminated soil is added to cylindrical tubes to provide the pressure for the contaminated soil below; feed tubes are used for feeding liquid for remedying the soil; an air compressor conveys air to the soil and pushes the liquid to diffuse. The remediation simulator of the present invention has a simple structure and simple operations, can really and effectively simulate the deep contaminated soil environment, and also evaluates and screens a method for remedying the deep petroleum contaminated soil.