The adding of suitable amounts of zeolitic tuff powder from Chicheng County in Hebei Province to animal feeds can increase the output of meat and egg, raise the effect of feed utilization, and reduce procuction costs. The measure may reduce content of harmful gas in animal house, help to improve microclimate in the house, benefit animal health, and better labor environment of stockmen. Using artifical dry clearing-away of excrements and zeolite-aerobic bacteria fermentation, the technology for treating animal waste possesses remarkably favorable con- ditions in technique and cost. Being of great significance not only in the improvement of the environment of the farm but also in the protection and application of water resources, this technology will provide a new method for the treatment and commercialization of animal wastes.