Construction method and detection method for characteristic spectrum of fructus piperis longi sample

The invention relates to a construction method and a detection method of a characteristic spectrum of a fructus piperis longi sample. According to the method, the ultra-high performance liquid chromatography is adopted, the chromatographic conditions are reasonably controlled, and the ultra-high performance liquid chromatography conditions suitable for fructus piperis longi medicinal materials, decoction pieces, aqueous extracts, standard decoction, formula granules and the like are found out, so that the characteristic chromatogram of the fructus piperis longi sample is constructed. The characteristic chromatogram comprises 10 characteristic peaks, so that the quality control of the fructus piperis longi is improved from the original content determination of a single component or the determination of a few common peaks to the overall control of the internal quality of the fructus piperis longi sample, and an effective method is provided for the quality detection of the fructus piperis longi and the modern pr