Preparation method of Nano Copper Oxide antimicrobial agent, applied by Qufu Normal University Patent, it is pointed out that nano copper oxide has a good effect on staphylococcus aureus and bacillus subtilis antibacterial effect. This nano copper oxide antibacterial agent with clean, efficient, low energy consumption, pollution is small. It is a new type of antibacterial agent, can be widely used in medicine, textile and other fields. Nano copper oxide also be applied in feed application: add nano copper oxide in the broiler feed, can improve the apparent digestibility of copper significantly. Canfuo is the leader in China in supplying Nano Products, copper salt products, ultrafine copper hydroxide.