The antibacterial nylon 6 fiber uses a variety of high-tech technologies to disperse the nano-silver antibacterial agent in the fiber, destroying the reproduction ability of bacteria, inhibiting and killing bacteria, and has long-lasting, broad-spectrum and high-efficiency antibacterial properties. Carrying out antibacterial performance tests showed that its inhibition rate against Staphylococcus aureus, Escherichia coli and Candida albicans was ≥99.9%. After 100 washings, the antibacterial effect was still ≥99%. Safety testing shows that it is safe, non-toxic to humans, non-irritating to the skin, and non-allergenic. The safety index is LD50≥5000mg / kg.