Unlocking system and unlocking method

The invention relates to an unlocking system and an unlocking method, and is applied to an electronic device with a touch screen. The unlocking system comprises a pattern detection module, a judgment module and an unlocking module, wherein the pattern detection module is used for detecting a pattern formed in a way that at least two fingers of a user are put on a preset unlocking area on the touch screen when the electronic device needs to be unlocked; the judgment module is used for judging whether the detected pattern is matched with a preset unlocking pattern in the electronic device or not; and the unlocking module is used for unlocking the touch screen when the detected pattern is matched with the preset unlocking pattern.