The invention discloses a healthcare and growth-promoting goat feed additive and application thereof. The additive comprises the following ingredients: flos pruni mume, herba commelinae, fructus oryzae germinatus, rhizoma phragmitis, semen dolichoris, radix polygoni multiflori, omphalia, semen cucurbitae, herba melastomatis afinis, herba linderniae angustifoliae, herba polygoni caespitosi and cortex ailanthi; the ingredients are proportionally prepared. During use, the additive accounts for 1.5-3.5% of the basic feed by mass, is fed once every two weeks, and is continuously fed for two days every time; when an epidemic occurs, the dose is increased to 3.5%, and the additive is continuously fed for three days. According to the invention, all the experimental groups, which use the healthcare and growth-promoting goat feed additive, have an average weight gain higher than that of the blank control group and a morbidity rate lower than that of the blank control group at the age of eight months. The healthcare and growth-promoting goat feed additive is prepared on the basis of physiological characteristics of goats and the disease occurrence rule, and under consideration of the principle of compatibility of traditional Chinese medicines; all the ingredients are mutually synergistic, and are combined to achieve the effects of disease prevention, disease treatment, growth promotion and the like.