By using the authority statistics, this paper analyzes the evolution process of swine industry in Shandong province from five aspects, such as product contribution, value contribution, employment contribution, income contribution, trade contribution and so on. The results of the study show that, since 1978, the absolute amounts of the indexes, such as pigs for slaughter, pigs for output home, pork production, swine industry value and pig-raising income is in relatively stably growing trend, but the relative amounts reveal a fluctuate development trend in Shandong province; pig-raising persons and pork exportations is in decreasing trend in Shandong province.