The invention discloses a sow compound additive for improving the productivity potential of piglets. The sow compound additive is prepared from the following raw materials in parts by weight of 20-40 parts of 98% betaine hydrochloride, 0.5-2 parts of vitamin E, 0.5-3 parts of vitamin B12, 0.1-0.4 part of folic acid, 7-12 parts of 98% L-methionine, 0.001-0.003 part of sodium selenite, 0.5-3 parts of conjugated linoleic acid calcium salt, 0.01-0.03 part of chia seeds, 1-4 parts of soybean oil, 1-4 parts of linseed oil, 1-4 parts of olive oil, 12-16 parts of radix codonopsis, 6-9 parts of pericarpium citri reticulatae, 3-5 parts of liquorice roots, 15-20 parts of konjaku flour, 3-8 parts of jujube powder, 0.5-4 parts of inulin, 0.3-0.8 part of tremella fuciformis spore powder, 1-4 parts of propolis, 0.01-0.03 part of lactobacillus plantarum, 0.02-0.06 part of saccharomyces cerevisiae and 0.04-0.08 part of bacillus. The sow compound additive can regulate the growth performance, immune performance and pork quality of piglets by feeding sows in the middle and later periods of pregnancy and lactation periods.