A method, a device and a terminal for preventing unintentional triggering of a touch key are disclosed. The method is applicable to a terminal having a touch key and a touch screen including a touch area. The method includes obtaining a current direction state of the touch screen. The method also includes detecting a first touch operation to a touch key when the current direction state of the touch screen is a first direction state. Furthermore, the method includes determining that the first touch operation is an unintentional operation if a second touch operation to the touch area is detected within a preset time period, when the first touch operation is detected.