The invention discloses a diagnosis marker combination suitable for early screening and diagnosis of
lung cancer. The diagnosis marker combination comprises one of 14 serum (or
plasma) metabolites ormore: Acylcarnitine C8, decenoyl-
carnitine (Acylcarnitine C10: 1), decanoyl-
carnitine (Acylcarnitine C10), lauryl-
carnitine (Acylcarnitine C12), dimyristoyl-carnitine (Acylcarnitine C14: 2); lysophosphatidyl-
ethanolamine (16: 0) (LPE(16: 0)), lysophosphatidyl-
ethanolamine (20: 4) (LPE (20: 4)), lysophosphatidyl-
ethanolamine (20: 3) (LPE (20:3)), lysophosphatidyl-
choline (20: 3 / 0: 0) (LPC (20: 3 / 0:0)), lysophosphatidyl-
choline (0: 0 / 22: 5) (LPC (0: 0 / 22: 5)); 3-hydroxyl lauroleic acid (FA(12: 1(OH))), 3-hydroxy myristic dienoic acid (FA(14: 2(OH))), 3-hydroxyl
linoleic acid (FA (18: (OH))), 3-hydroxy
oleic acid (FA (18: 1(OH))). The diagnosis marker can be used for constructing a diagnosis model, and the model is high in sensitivity and good in specificity, can be used for early screeningand diagnosis of
lung cancer, and has good clinical use and popularization values.