The invention discloses a 4-percent health-care premix of lactation sow, and relates to the technical field of animal feed. The premix consists of the following raw materials in parts by weight: 21 parts of lactation sow multi-mineral, 1.5 parts of phytase, 2 parts of lactation sow multi-vitamin, 1.5 parts of arsanilic acid, 1.5 parts of complex enzyme, 1.5 parts of probiotics, 2.5 parts of organic chromium, 2 parts of a sweetening agent, 1 part of an antioxidant, 2.5 parts of skin red element, 2.5 parts of bacitracin zinc, 7 parts of choline chloride, 10 parts of 98.5 percent lysine, 100 parts of calcium hydrophosphate, 42 parts of salt, 150 parts of stone powder, 101 parts of zeolite, 51 parts of mixture of rice chaff and husk, 15 parts of miscellaneous fish meal, 6 parts of peanut kernel, 20 parts of sweet potato, 15 parts of sweet potato leaf powder, 20 parts of peanut shell powder, 10 parts of soybean cake, 10 parts of rapeseed oil cake, 15 parts of sesame oil cake, and 6 parts of Chinese herbal medicine additive. Since containing Chinese herbal medicine, the premix provided by the invention not only ensures normal nutritional requirement of the lactation sow, but also prevents and cures disease, and also improves immunity and growth of animal; moreover, the premix is free of toxic or side effect, does not cause drug resistance and pollute environment, is capable of enhancing immunity, and is quick in effect, low in cost and wide in application.