The invention belongs to the fields of gene engineering and tumor medicines, and discloses an SNP (Single Nucleotide Polymorphism) marker correlated to assistant diagnosis of noncardia cancer and application thereof. The marker is a combination of the following 25 SNP: rs1950476, rs238889, rs7973779, rs1445227, rs7528071, rs1549058, rs9841504, rs749130, rs17032274, rs3027247, rs9578831, rs714842, rs17262413, rs16924994, rs13361707, rs12496648, rs2826151, rs12416175, rs3753473, rs7349868, rs60266313 and the like. The marker can be used for preparing an assistant diagnosis kit for the noncardia cancer.