The invention discloses antibacterial stainless steel for electrical devices and belongs to the technical field of stainless steel materials. The stainless steel comprises the following chemical components of, by weight, 0.08% or the less of C, 0. 50% or the less of Si, 1.00% or the less of Mn, 0.05% or the less of P, 0.05% or the less of S, 8.0-12.0% of Ni, 18.0-20.0% of Cr, 2.0-5.0% of Cu, 0.5-1.5% of Mo, 0.05-0.80% of Ga and the balance Fe. After the stainless steel is subjected to special heat treatment, composite antibacterial phases (the copper-rich phase and the gallium-rich phase) canbe precipitated from a stainless steel matrix in a dispersion mode, the environment of the stainless steel for the electrical devices is commonly moist, thus gallium ions can be effectively dissolvedout through the gallium-rich phase, and the gallium ions and copper ions can obviously restrain breeding of common bacteria, in particular to mould on the surface of the stainless steel for linings ofthe electrical devices. According to the antibacterial stainless steel, the problem that as for existing electrical devices with stainless steel linings, a stainless steel container is used, and consequently bacterial infection is caused is solved, and the antibacterial stainless steel can be widely applied to various stainless steel electrical devices such as a washer roller, a refrigerator lining, a water heater, a water purifier and a humidifier.