Abstract: This study was carried out to investigate the relationship between reproductive traits and milk yield traits of Brown Swiss herd by using canonical correlation analysis. Data collected for 185 Brown Swiss cows, maintained at the state farm of Konuklar in Konya province. One of the set (Y set) was consisted of reproductive traits that were gestation period (GP), first service age (FSA), first calving age (FCA), service period (SP), calving interval (CI), number of insemination per (NIPC) and the other set (X set) was constituted of lactation milk yield (LMY) and lactation length (LL). The first canonical correlation coefficient between the two sets was 0.625 (P<0.01) and the second was 0.225 (P>0.01) respectively.