Belonging to the premix field, the invention relates to an additive premix for laying hens. The premix of the invention mainly contains: soybean meal, calcium hydrogen phosphate, stone powder, salt, compound vitamin, nicotinic acid, D-calcium pantothenate, biotin, choline chloride, copper sulfate, ferrous sulfate, zinc sulfate, manganese sulfate, potassium iodide premix, sodium selenite premix, ethoxy quinoline, phytase, microecologics, xylo oligosaccharide, bentonite and rice husk. With xylo oligosaccharide and a plurality of probiotics and without antibiotic, the premix in the invention hasa reasonable formula and high viable bacteria content. Animal feeding experiments prove that the additive premix in the invention has ideal feeding effects. The ammonia concentration, the death and culling rate, and the broken egg rate can be reduced, while the laying rate and egg weight are enhanced. The composite premix provided in the invention can well promote the laying performance and health status of laying hens, and meet the needs of mass raising households, and is suitable for green and healthy culture so as to produce pollution-free egg products.