Abstract: Antibacterial stainless steel is a new antibacterial material, and has a big difference in antibacterial properties because of the difference in antibacterial mechanism and preparation method. Research progress on the preparation of antibacterial stainless steel by plasma surface technology, such as ion implantation technique, magnetron sputtering coating technique and double-layer glow plasma surface metallurgy technique, is reviewed. The antibacterial mechanism of antibacterial stainless steel is described. The future development direction is prospected.