Input method and system of mobile equipment

The invention relates to an input method and an input system of mobile equipment. The method comprises the following steps of: acquiring the three-dimensional track data and acceleration data of the mobile equipment moved by a user; and identifying the acquired three-dimensional track data and acceleration data to acquire input characters. In the input method and the input system of the mobile equipment, the three-dimensional track data and acceleration data of the mobile equipment moved by the user are acquired and identified so as to acquire the input characters, so that the method and the system are convenient to operate, are difficultly influenced by a noisy ambient environment and are high in identification rate.