The present invention mainly relates to the technical field of breeding and discloses a humulus scandens containing feed additive for black bone chickens. The feed additive is prepared from the following raw materials: humulus scandens, eichhornia crassipes, typha orientalis, arundo donax leaves, elodea nuttallii, white granulated sugar, lactic acid bacteria, compound enzymes, an eupatorium coelestinum extract and a conyza canadensis extract. The humulus scandens is rich in sources, the wastes are turned into treasures, and new utilization ways of the humulus scandens are utilized. The feed additive is rich in raw materials and low in prices, contains a variety of health-care ingredients, is fermented by the lactic acid bacteria, can remove the raw and astringent taste, is sour and sweet in mouthfeel, the use of lactic acid bacteria, increases palatability, increases feed intake, promotes gastrointestinal absorption functions, prevents bacteria and inflammation, enhances immunity, keeps fresh and green color and luster, promotes the formation of melanin in the black bone chickens, enhances the health-care functions of chicken meat, enable the mouthfeel of the chicken meat to be fresh and tender, increases an egg production amount by 15.1%, improves an economic income by 13.9%, is simple in use method and less in addition amount, saves a lot of breeding costs, and is easy to promote sales.