The invention discloses a novel method for simultaneously measuring contents of multiple active ingredients of dogwood. The method is used for simultaneously measuring the contents of seven ingredients, namely loganin, gallic acid, 5-HMF (hydroxymethyl furfural), protocatechuic acid, morroniside, sweroside and cor-nuside, in dogwood medicinal materials from four main producing areas by utilizing a high performance liquid diode array detection method. The method comprises the steps of: carrying out gradient elution at the flow speed of 1.0 mL.min-1 by utilizing a Phenoemenex C18 polar chromatographic column and taking acetonitrile and 0.1% methanoic acid solution as mobile phases, wherein the column temperature is 30 DEG C, the detection wavelengths are 220 nm, 240 nm, 260 nm, 265 nm and 280 nm. The contents of the loganin, the gallic acid, the 5-HMF, the protocatechuic acid, the morroniside, the sweroside and the cor-nuside in each sample are respectively 0.22-0.800 mg/g, 0.002-0.024 mg/g, 0.069-3.775 mg/g, 8.192-28.111 mg/g, 0.048-0.598 mg/g, 1.228-9.311 mg/g and 1.450-8.381 mg/g. The method is simple and accurate, is good in reproducibility and is capable of providing bases for comprehensively evaluating and controlling the quality of dogwood decoction pieces.