A screen locking method, applied to a terminal with a touchscreen, wherein the method comprises: detecting, by the terminal, a first sliding operation performed by a first touch object from a first edge of the touchscreen; detecting, by the terminal, a second sliding operation performed by a second touch object from a second edge of the touchscreen before the first sliding operation is released, wherein the first edge is different from the second edge; and responsive to detecting the first sliding operation and detecting the second sliding operation before the first sliding operation is released, triggering, by the terminal, a selection and locking procedure, wherein the selection and locking procedure comprises: selecting, by the terminal, a to-be-locked area on the touchscreen based on the first edge and the second edge of the touchscreen and respective touch point positions at which the first sliding operation and the second sliding operation stop on the touchscreen; and locking, by the terminal, the to-be-locked area to generate a corresponding locked area; wherein each of the first sliding operation and the second sliding operation are defined to have stopped when the terminal no longer detects movement of the corresponding touch object; wherein after the selecting, by the terminal, a to-be-locked area on the touchscreen, the method further comprises: setting and displaying, by the terminal, a coverage layer covering the to-be-locked area; wherein the coverage layer is any one of the following: a translucent layer, a translucent layer in an animation effect, a translucent layer with a touch lock guidance message, or a translucent layer with visual information; and after the locking, by the terminal, the to-be-locked area, the method further comprises: deleting, by the terminal, the coverage layer that covers the locked area and restoring a display in the locked area; wherein when a touch operation that is not a preset unlock operation and that is on the locked area on the touchscreen is detected, the touchscreen does not respond to the touch operation and the coverage layer covering the to-be-locked area is displayed to indicate the locked area. selecting, by the terminal, a to-be-locked area on the touchscreen based on the first edge and the second edge of the touchscreen and respective touch point positions at which the first sliding operation and the second sliding operation stop on the touchscreen; and locking, by the terminal, the to-be-locked area to generate a corresponding locked area; wherein each of the first sliding operation and the second sliding operation are defined to have stopped when the terminal no longer detects movement of the corresponding touch object; wherein after the selecting, by the terminal, a to-be-locked area on the touchscreen, the method further comprises: setting and displaying, by the terminal, a coverage layer covering the to-be-locked area; wherein the coverage layer is any one of the following: a translucent layer, a translucent layer in an animation effect, a translucent layer with a touch lock guidance message, or a translucent layer with visual information; and after the locking, by the terminal, the to-be-locked area, the method further comprises: deleting, by the terminal, the coverage layer that covers the locked area and restoring a display in the locked area; wherein when a touch operation that is not a preset unlock operation and that is on the locked area on the touchscreen is detected, the touchscreen does not respond to the touch operation and the coverage layer covering the to-be-locked area is displayed to indicate the locked area. setting and displaying, by the terminal, a coverage layer covering the to-be-locked area; wherein the coverage layer is any one of the following: a translucent layer, a translucent layer in an animation effect, a translucent layer with a touch lock guidance message, or a translucent layer with visual information; and after the locking, by the terminal, the to-be-locked area, the method further comprises: deleting, by the terminal, the coverage layer that covers the locked area and restoring a display in the locked area; wherein when a touch operation that is not a preset unlock operation and that is on the locked area on the touchscreen is detected, the touchscreen does not respond to the touch operation and the coverage layer covering the to-be-locked area is displayed to indicate the locked area. a translucent layer, a translucent layer in an animation effect, a translucent layer with a touch lock guidance message, or a translucent layer with visual information; and after the locking, by the terminal, the to-be-locked area, the method further comprises: deleting, by the terminal, the coverage layer that covers the locked area and restoring a display in the locked area; wherein when a touch operation that is not a preset unlock operation and that is on the locked area on the touchscreen is detected, the touchscreen does not respond to the touch operation and the coverage layer covering the to-be-locked area is displayed to indicate the locked area. deleting, by the terminal, the coverage layer that covers the locked area and restoring a display in the locked area; wherein when a touch operation that is not a preset unlock operation and that is on the locked area on the touchscreen is detected, the touchscreen does not respond to the touch operation and the coverage layer covering the to-be-locked area is displayed to indicate the locked area.