An evaluating method for a pattern comprising: a fingerprint preparing step preparing a target fingerprint that comprises peaks (35, 37, 39, 41, 43, 45, 47, 49, 51, 53) and retention time points of the peaks detected from a chromatogram of a multicomponent material that is an evaluation target; a peak pattern preparing step configured to prepare a peak pattern for an assignment target peak of the target fingerprint, the peak pattern being configured by retention time and intensity of n+1 peaks (43, 45, 47) which include n peripheral peaks (43, 47) being present on at least one of the sides located in the front and in the rear of the assignment target peak in a time axis direction; and prepare peak patterns (89, 91, 93, 95) for respective assignment candidate peaks (65, 67, 69, 71), which are peaks having differences in appearance time point relative to the assignment target peak within a set range, of a reference fingerprint that corresponds to the target fingerprint and comprises peaks (57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77) and retention time points of the peaks detected from a chromatogram of a multicomponent material determined in advance as a normal product that is evaluation criteria, each of the peak patterns (89, 91, 93 and 95) being configured by retention time and intensity of n+1 peaks (63, 65, 67; 65, 67, 69; 67, 69, 71; 69, 71, 73) which include n peripheral peaks (63, 67; 65, 69; 67, 71; 69, 73) being present on at least one of the sides located in the front and in the rear of the corresponding assignment candidate peak (65, 67, 69, 71) in the time axis direction; a peak assigning step comparing the peak pattern for the assignment target peak with the peak patterns (89, 91, 93, 95) for the assignment candidate peaks (65, 67, 69, 71) to calculate the degree of matching between the peak pattern for the assignment target peak and the peak patterns for the assignment candidate peaks, to specify and assign corresponding peaks (45, 65) of the target fingerprint and the reference fingerprint; and an evaluating step evaluating the peaks that are specified and assigned in the peak assigning step by comparison with peaks of a plurality of reference fingerprints that are evaluation criteria whose peaks change in a time series. a fingerprint preparing step preparing a target fingerprint that comprises peaks (35, 37, 39, 41, 43, 45, 47, 49, 51, 53) and retention time points of the peaks detected from a chromatogram of a multicomponent material that is an evaluation target; a peak pattern preparing step configured to prepare a peak pattern for an assignment target peak of the target fingerprint, the peak pattern being configured by retention time and intensity of n+1 peaks (43, 45, 47) which include n peripheral peaks (43, 47) being present on at least one of the sides located in the front and in the rear of the assignment target peak in a time axis direction; and prepare peak patterns (89, 91, 93, 95) for respective assignment candidate peaks (65, 67, 69, 71), which are peaks having differences in appearance time point relative to the assignment target peak within a set range, of a reference fingerprint that corresponds to the target fingerprint and comprises peaks (57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77) and retention time points of the peaks detected from a chromatogram of a multicomponent material determined in advance as a normal product that is evaluation criteria, each of the peak patterns (89, 91, 93 and 95) being configured by retention time and intensity of n+1 peaks (63, 65, 67; 65, 67, 69; 67, 69, 71; 69, 71, 73) which include n peripheral peaks (63, 67; 65, 69; 67, 71; 69, 73) being present on at least one of the sides located in the front and in the rear of the corresponding assignment candidate peak (65, 67, 69, 71) in the time axis direction; a peak assigning step comparing the peak pattern for the assignment target peak with the peak patterns (89, 91, 93, 95) for the assignment candidate peaks (65, 67, 69, 71) to calculate the degree of matching between the peak pattern for the assignment target peak and the peak patterns for the assignment candidate peaks, to specify and assign corresponding peaks (45, 65) of the target fingerprint and the reference fingerprint; and an evaluating step evaluating the peaks that are specified and assigned in the peak assigning step by comparison with peaks of a plurality of reference fingerprints that are evaluation criteria whose peaks change in a time series.