The invention relates to a method for determining the content of effective components in a Kunxinning preparation. Comprising the following steps: step 1, preparing a reference substance solution, namely respectively taking a proper amount of one or two or more of
catalpol,
rehmannia glutinosa liboside D,
paeoniflorin,
calycosin-7-
glucoside, (-)-syringinol-4-O-beta-D-furanselinosyl-(1-2)-beta-D-glucopyranoside, curculigoside,
icariin and
baohuoside I reference substances; preparing a reference substance solution; step 2, preparation of a
test solution: taking a Kunxinning preparation, weighing the Kunxinning preparation, placing the Kunxinning preparation in a measuring flask, adding
methanol to dilute the Kunxinning preparation to a scale, filtering the Kunxinning preparation, and taking a subsequent filtrate; step 3, a determination method: respectively and precisely sucking the reference substance solution and the
test solution, injecting the solutions into a high performance liquid chromatograph, and determining component types and / or component contents; the chromatographic conditions are as follows: octadecylsilane chemically bonded silica is used as a filler, water is used as a mobile phase A,
acetonitrile is used as a mobile phase B,
gradient elution is performed, the flow velocity is 0.5-1.5 mL / min, the
column temperature is 25-35 DEG C, the detection
wavelength is 200-300 nm, and the sample size is 10-30 [mu] L.