The invention relates to a carpet cleaning agent, and belongs to the technical field of chemical industry products, wherein the carpet cleaning agent is prepared from the following materials: 10-13 parts of sodium dodecylbenzene sulfonate, 10-15 parts of glycolic acid, 6-7 parts of sodium sulfate, 2-8 parts of sodium tripolyphosphate, 0.6-0.8 part of polyether, 3-5 parts of sodium phosphate, 20-28parts of tetrachloroethylene, 5-7 parts of potassium pyrophosphate, 6-8 parts of an alkylphenol ethoxy ammonium salt, 0.1-0.3 parts of sodium ethylenediamine tetraacetate, and 90-100 parts of water.The carpet cleaning agent of the present invention has advantages of good cleaning effect, no damage on fiber, safety and environment protection.