Polluted soil repairing system

The invention relates to a polluted soil repairing system. The polluted soil repairing system comprises a thermal desorption device, a filter element adsorption device, a draught fan, a packing tower and an indication tank, which are communicated in sequence through a pipeline, wherein the thermal desorption device comprises a furnace chamber, a fuel gas heating assembly, an air inlet valve located on a side wall of the furnace chamber and heat pipes located in the furnace chamber; the top of the furnace chamber is communicated with the filter element adsorption device through a pipeline; the plurality of heat pipes are arranged; one end of each heat pipe is stuck on the bottom surface of the furnace chamber; the other ends of the heat pipes extend upward to the upper middle part of the furnace chamber; the fuel gas heating assembly is used for heating the bottom surface of the furnace chamber; the indication tank is internally provided with an adsorption indication agent; and an exhausting pipe is arranged a