The invention provides a mobile-terminal-based calligraphy method and system. The method comprises the steps that a first display interface is provided for selecting a first function mode, wherein the first function mode at least comprises a calligraphy mode; if the calligraphy mode is selected, a second display interface is provided for selecting a second function mode, wherein the second function mode comprises a Chinese calligraphy mode and an English calligraphy mode; if the Chinese calligraphy mode is selected, a variety of levels of modes are provided for selecting, wherein a variety of levels provide different fonts and calligraphy materials for selecting; if the English calligraphy mode is selected, a variety of types of modes are provided for selecting; a first touch screen signal is acquired and is compared with a first preset signal; if a comparison result is consistent, a second touch screen signal is acquired and is compared with a second preset signal; if a comparison result is consistent, a stroke image associated with the second preset signal is displayed and saved; and if the comparison result is inconsistent, a user is suggested to reacquire the first touch screen signal. Monotonousness and limitations of traditional paper calligraphy are avoided.