The invention relates to a restoration method of polycyclic aromatic hydrocarbon-heavy metal polluted soil. According to the soil dry weight, an eluting agent is added to the polycyclic aromatic hydrocarbon-heavy metal polluted soil for eluting the polycyclic aromatic hydrocarbon-heavy metal polluted soil for 12-24h according to a weight ratio of the eluting agent to the polycyclic aromatic hydrocarbon-heavy metal polluted soil being 10:1 to 30:1; the eluting agent consists of 5000-8000mg/L N-dodecanoyl ED3A solution and 200-300mg/L chitosan solution. By adopting and compounding the chitosan solution and the N-dodecanoyl ED3A solution for forming the eluting agent, the elution rates of heavy metal and organic matters in the polycyclic aromatic hydrocarbon-heavy metal polluted soil are raised significantly, and the antagonism on the elution of the organic matters due to the heavy metal when N-dodecanoyl ED3A is used to elute the polycyclic aromatic hydrocarbon-heavy metal polluted soil is overcome. In addition, a chelating type surfactant, namely, the N-dodecanoyl ED3A, and the chitosan solution have no toxicity to the environment and are prone to biological degradation.