The invention discloses a method for identifying or assisting in identifying the eye muscle area of the 100-kg weight of a pig and a kit special for the method. The method includes the steps of detecting whether the 16th-site deoxyribonucleotide of the H19 gene of the pig to be detected is C or T or C and T, determining whether the gene type of the pig to be detected is TT or CC or TC, and determining the eye muscle area of the 100-kg weight of the pig according to the gene type of the pig, wherein the eye muscle area of the 100-kg weight of the pig of the TT gene type is larger than that of the pig of the CT gene type, and the eye muscle area of the 100-kg weight of the pig of the CT gene type is larger than that of the pig of the CC gene type. It is proved through tests that by means of the method, the eye muscle area of the 100-kg weight of the pig can be accurately and rapidly identified, and important reference significance in genetic breeding and sexual ability testing of the pig is achieved.