The invention discloses daily ration for relieving constipation of pregnant sow and a preparation method of the daily ration. The daily ration for relieving constipation of the pregnant sow is prepared from the following raw material components in parts by weight: 200 to 700 parts of corn, 0 to 400 parts of wheat, 50 to 150 parts of rice bran, 100 to 200 parts of dry apple pomace, 50 to 100 parts of jujube powder, 50 to 150 parts of bean pulp, 0 to 50 parts of fishmeal, 15 to 35 parts of soybean oil, 5 to 20 parts of soybean lecithin, and 19.4 to 97.5 parts of feed additives; the preparation method comprises the steps of uniformly mixing the corn, the wheat, the rice bran, the dry apple pomace, the jujube powder, the bean pulp and the fishmeal, then smashing into a particle mixture, adding the feed additives, the soybean lecithin and the soybean oil, uniformly mixing, then regulating moisture and temperature, pelleting and cooling, thus obtaining a finished product of the daily ration. The moderate dry apple pomace and jujube powder and the corn, the rice bran, the bean pulp, the fishmeal, the soybean oil, the soybean lecithin and the feed additives, which are properly proportioned are matched for use, and normal peristalsis of intestinal tracts is guaranteed, the normal nutrition need of the sow is met and the peristalsis of the intestinal tracts is promoted respectively through three aspects, i.e., fiber level, energy level and enzymic preparations, of a recipe, thus reducing the constipation of the sow.