A method for removing remaining agricultural chemicals in soil by using an amino acid liquid fertilizer is provided to promote microorganism degradation of the remaining agricultural chemicals in soil by activating useful microorganisms. The remaining agricultural chemicals in soil such as farmland or lawn are removed by spraying the amino acid liquid fertilizer on the soil in the amount of 0.1-1 ml/m^2 before or after spraying the agricultural chemicals, wherein the spraying of the amino acid liquid fertilizer is performed 2-3 times at an interval of 1 week.
