The invention discloses a touch screen unlocking method and system as well as a communication terminal; and the touch screen unlocking method comprises the following steps: starting an unlocking interface; inputting at least one password information through the unlocking interface; receiving input password information; when the input password information is matched with a preset unlocking password, unlocking a touch screen and entering a preset application interface; and otherwise, receiving the input password information again. Compared with the prior art, the touch screen unlocking method disclosed by the invention has the advantages as follows: the touch screen is unlocked to enter the preset application interface as long as the password information input by a user through the touch screen is matched with the preset unlocking password on a terminal, so that the traditional direct sliding or down-pulling unlocking is substituted; therefore, the safety of data on the terminal is enhanced; according to the invention, as an unlocking plate, which is touched to rotate, is adopted in the password information inputting method, the unlocking interest is enhanced, so that user-friendly experience value of the user is increased; and moreover, information corresponding to character bits on the unlocking plate is dynamically changed, so that the input concealment is enhanced to guarantee the safety of the data on the terminal.