NOVELTY - Preparing a multifunctional nutrition cleaner composition for removing soil contaminant, comprises: mixing plant including bark, sawdust, chicken manure, organic by-products and animal slaughter with organic material; adding microorganisms consisting of Bacillus pumilus, Bacillus subtilis, Bacillus licheniformis, Bacillus megaterium, Rhodobacter capsulata or Rhodobacter sphaeroides; and primary fermenting the mixture under aerobic conditions for 15-40 days, and then secondary fermenting in an open field for 60-120 days.    USE - The method is useful for preparing a multifunctional nutrition cleaner composition for removing soil contaminant (claimed).    ADVANTAGE - The multifunctional nutrition cleaner composition removes the soil contaminant in an eco-friendly manner, and improves soil properties.    DETAILED DESCRIPTION - Preparing a multifunctional nutrition cleaner composition for removing soil contaminant, comprises: mixing plant including bark, sawdust, chicken manure, organic by-products and animal slaughter with organic material; adding microorganisms consisting of Bacillus pumilus, Bacillus subtilis, Bacillus licheniformis, Bacillus megaterium, Rhodobacter capsulata or Rhodobacter sphaeroides; primary fermenting the mixture under aerobic conditions for 15-40 days, and then secondary fermenting in an open field for 60-120 days to obtain a fermented organic material; concentrating and filtering the fermented organic material to obtain a fermented concentrate; adding a coagulant to the fermented concentrate, and then drying and agglomerating; crushing the dried product to obtain powder; and adding and mixing the powder, a nitrogen-containing organic fertilizer powder, a phosphorus-containing fertilizer powder, a potassium-containing fertilizer powder, cation neutralizing agents, trace element-containing material necessary for the growth of plants, a surfactant, an anion neutralizing agent, plant growth regulators, and pH corrector to obtain the final composition.