The invention discloses a method by utilizing microorganisms and tall fescues to recover a compost heavy metal leakage system, which comprises the steps of: placing 500g of air-dried garden soil into a polyvinyl chloride (PVC) pipe with a diameter of 7.5cm and a length of 25cm, placing 60g of horizontal spacing layer into the PVC pipe, and then placing 280g of compost into the PVC pipe; and seeding 0.6g of tall fescue seeds into the PVC pipe, applying microorganism agent with different concentration and nitrilotriacetic acid (NTA) natrium solution of 10 to 20mmol/kg compost onto the surface of the compost after 30 days of the seeding, cutting grasses ten days later, and determining the variation of content of each one of the heavy metals such as cadmium (Cd), chromium (Cr), copper (Cu), lead (Pb) and zinc (Zn). Experimental results show that when the horizontal spacing layer is paved above the soil and below the compost, migration of harmful substances and heavy metals in the compost into the soil can be reduced, so that under the induction of chemical chelon and the synergic effect of the microorganisms, time for lawn plants to absorb the heavy metals and accumulation of the heavy metals into the lawn plants can be increased, and the migration of the heavy metals to deep soil can be reduced.