Biological stimulant for chlorine-containing compound pollution remediation and application of biological stimulant

The invention discloses a biological stimulant for chlorine-containing compound pollution remediation and application of the biological stimulant. The biological stimulant comprises polyferric sulfate and/or fulvic acid and lactobacillus plantarum fermentation supernate. Polyferric sulfate is selected for providing an iron source for thalli for the first time, fulvic acid is selected for providing a carbon-nitrogen source for the first time, and the polyferric sulfate and the fulvic acid are matched with the lactobacillus plantarum supernate for use, so that degradation of microorganisms, especially acinetobacter, on chlorine-containing compounds can be promoted, the degradation efficiency of the microorganisms on the chlorine-containing compounds is improved, and meanwhile, the purpose of treating waste with waste is achieved by reasonably utilizing fermentation waste liquid; the result shows that the degradation rate of chlorophenol with the initial concentration of 20 mg/L is maximally increased to 94% wit