The invention discloses concentrated feeds for sows. The concentrated feeds are prepared from the following components in parts by weight: 45 to 55 parts of corns, 4 to 6 parts of rapeseed oil, 2 to 4parts of fish meal, 35 to 45 parts of rapeseed meal, 1 to 3 parts of sucrose, 0.4 to 0.6 part of salt, 0.9 to 1.1 parts of stone powder, 0.7 to 0.9 part of light calcium carbonate, 0.06 to 0.08 partof vaccariae semen, 0.08 to 1 part of sparganii rhizoma, 0.12 to 0.14 part of tetrapanacis medulla, 0.11 to 0.13 part of chuanxiong rhizoma, 0.93 to 0.95 part of ophiopogonis radix, 0.87 to 0.89 partof sanguisorbae radix, 0.94 to 0.96 part of polyporus, 0.13 to 0.15 part of astragali radix, 0.15 to 0.17 part of codonopsis radix, 0.22 to 0.24 part of taraxaci herba, 0.19 to 0.21 part of rubiae radix et rhizoma, 0.23 to 0.25 part of glycyrrhizae radix et rhizoma, 0.27 to 0.29 part of isatidis folium and 0.07 to 0.09 part of pollen. According to the prepared concentrated feeds for the sows, filtrate obtained by decocting the vaccariae semen, the sparganii rhizoma, the tetrapanacis medulla, chuanxiong rhizoma, ophiopogonis radix, sanguisorbae radix, polyporus, astragali radix, the codonopsisradix, the taraxaci herba, the rubiae radix et rhizoma, the glycyrrhizae radix et rhizoma, the isatidis folium and the pollen is added into main feeds for use, so that the constitutions of the sows can be improved, lactation of the sows can be promoted, the disease prevention capability and the disease resistance of sows in a lactation period are improved, the milk quality of the sows in the lactation period can be improved, and the health of piglets can also be improved.