Objectives The pregnancy advantage of Norwegian red bull after crossing with Holstein cow under existing conditions of mixed farming was studied to improve the reproductive capacity of Holstein cow. Methods Holstein cows were fertilized with frozen semen of Norwegian red bull imported (Holstein cow♀×Norwegian red bull♂)to produce hybrids. The number of mating and pregnancies, and the pregnancy rates for different months and age groups were recorded. Results The pregnancy rate of hybrids by natural estrus mating was 36.41 percentage points higher than that of Holstein cow. The pregnancy rate of hybrids by same period mating, young cattle mating, and annual population mating increased by 30.24,47.64,and 36.83 percentage points, respectively. The pregnancy rate in hybrid cattle farm was significantly higher than that in Holstein cow farm. Conclusions The hybrid cattle farm significantly increased the reproduction rate of the cattle population through the improvement of Norwegian red bull with both milk and meat types.