The present disclosure provides a smart watch and a gesture input method for the smart watch. The present disclosure starts to acquire data of gestures by receiving gestures of the user, collects the data of the gestures of a user at a continuous time section, and finds proximate text corresponding to the obtained data of the gestures from the prestored corresponding relationship between the data of the gestures and the text, namely the proximate text is final output text. The present disclosure can accurately obtain output text that the user need and meets the user requirement for the smart watch without changing size of a screen of the smart watch.