The utility model discloses a computer key, including shells assembly and unlocking head subassembly, the unlocking head subassembly includes locating lever and mount pad, the mount pad is installed on shells assembly, and the locating lever is installed on the mount pad, and the locating lever can be dismantled with the mount pad and be connected. Thereby make locating lever surface on the computer key go out freshly ground as computer key through frequent plug and decrease the back, accessible time dismantles the locating lever on by the mount pad and change, avoided traditional computer key because the surperficial bad phenomenon of circuit connection of wearing and tearing the corrosion and arousing of locating lever to just also effectively guaranteed computer key's reliability and security, finally solve traditional computer key have the problem of serious potential safety hazard.