The invention discloses a method for extracting total-coumarins from a traditional Chinese medicine common cnidium fruit and belongs to the technical field of extraction of effective components of traditional Chinese medicine. The method comprises the steps of grinding and sieving the dried common cnidium fruit, performing extraction by ethanol of mass concentration at 75-90% through heating reflux, filtering, and concentrating to thick paste; adding water 3-5 times the weight of the common cnidium fruit into the thick paste, standing for 12-24 hours under refrigeration, and centrifuging to obtain liquid supernatant; adding the liquid supernatant into macroporous resin at the ratio of 1.5-2.5ml of liquid supernatant per gram of macroporous resins to absorb resin columns through macro pores, washing through distilled water firstly, then eluting by ethanol of mass concentration at 50-70%, collecting eluent, concentrating, and drying to obtain the total-coumarins of the common cnidium fruit. The ethanol is used as an organic solvent, and thus is safe for the environment and users; the method has the advantages of capability of obtaining products with high purity, no residue of the organic solvent, fewer separation steps, mild operation conditions, easiness in operation, environment-friendliness, and easiness in scale-up and continuous operation, and is an environment-friendly method.