The invention discloses methods and devices for constructing a bait
library, constructing a target-bait
library and conducting
metabolome FDR identifying. The method for constructing the bait librarycomprises the following steps of S1, respectively comparing a
metabolite parent
ion mass-to-charge ratio M of each
spectrogram in a
target database with all other spectrograms in the
target database one by one, and storing the
spectrogram with a child
ion mass-to-charge ratio equal to M and / or a serial number of the
spectrogram in a
signal spectrum index array to generate a
signal spectrum index two-dimensional array; S2, traversing all elements in the
signal spectrum index two-dimensional array to obtain n arrays D, and forming a bait
library signal array by the n arrays D; and S3,
copying parent
ion information of the spectrogram, corresponding to each subset in the bait library signal array, in the
target database to the bait library signal array to form the bait library. According to the method for conducting
metabolome FDR identifying, FDR
quality control can be carried out on an identification result; and the spectrograms can be rapidly identified with
high flux, and the
utilization rate of the spectrograms and the coverage degree of
metabolite identification are improved.