The invention provides a biomarker for diagnosing
white matter lesion and application thereof. The biomarker is
ceramide (d18: 0 / 24: 1 (15Z)) (Cer (d18: 0 / 24: 1 (15Z))). According to the present invention, the biomarker
ceramide (d18: 0 / 24: 1 (15Z)) is combined with
cholesterol-alpha-D-
glucoside (Cholesteryl-alpha-D-
glucoside), and is combined with 6Z, 9Z, 20-eicosatrienoic acid (6Z, 9Z, 20-Henecosatriene),
ephedrine A (Cannflavanin A), cucurbitacine E (Cucurbitacine E) or
cholesteryl ester 22: 6 (22: 6
Cholesteryl ester) so as to determine whether the
white matter lesion exists or not; the biomarker for diagnosing the
white matter lesion is used for preparing a detection
reagent for diagnosing the white matter lesion, and is beneficial for diagnosing whether the white matter lesion tends to exist or not and preventing the white matter lesion in advance.