The invention belongs to the technical field of amino acid analysis, and particularly relates to an Fmoc amino acid analysis method, which comprises: 1, dissolving Fmoc-Arg(Pbf)-OH in acetonitrile, wherein the concentration of the Fmoc-Arg(Pbf)-OH is 2-10 mg / mL; and 2, carrying out high performance liquid chromatography analysis by using the Fmoc-Arg(Pbf)-OH solution prepared in the step 1 as a sample, wherein the chromatographic conditions of the high performance liquid chromatography are that octadecylsilane bonded silica gel is used as a filler, Sinochrom ODS-BP is used as a a chromatographic column, gradient elution is used, the flow rate is 1.0-2.0 ml / min, the column temperature is room temperature, and the detection wavelength is 220 nm. According to the present invention, with the method, the Fmoc amino acid Fmoc-Arg(Pbf)-OH can be precisely analyzed, and the method has advantages of high sensitivity, low detection limit, simple detection method, good stability and high repeatability.