The invention discloses a green feed for fattening pigs. The green feed is prepared from the following raw materials: maize, sunflower calathide, maize alcohol grains, wheat, bean pulp, rapeseed dregs, bran, fish meal, animal meal, natural betaine, calcium hydrogen phosphate, red date extracts, broccoli steam leaf meal, hawthorn powder, pine needle meal, plasma protein, whey powder, sweet potato vine meal, saccharified tea leaf powder, safflowers, malt, pumpkin seeds, codonopsis pilosula, cnidium monnieri, honeysuckle, garlic, cortex pseudolaricis, green tangerine peel, quisqualis inidca, radix bupleuri, areca, radix stemonae, pokeberry roots, andrographis paniculata, rhizoma corydalis, cacumen tamaricis, sophora flavescens, fenugreek, glossy privet fruits, poplar barks, saccharicterpenin, perilla seed extracts, ginkgo biloba extracts, scutellaria baicalensis and belamcanda chinensis. Various cheap raw materials, various nuisanceless traditional Chinese medicine additives and natural plant extracts are adopted in the formula of the green feed disclosed by the invention, so that the digestive ability of the pigs is enhanced, the appetite and immunity of the pigs are enhanced, the cost of the feed is reduced, and the economic benefit of the pig industry is increased.