The invention provides a probe, an oscilloscope, and a motion identification system and method. The probe comprises a probe tip, a signal buffer unit, a coaxial signal line and a BNC joint. After a detected signal acquired by the probe tip is subjected to buffer processing through the signal buffer unit, the detected signal passes through the coaxial signal line and the BNC joint, and then is transmitted to the oscilloscope. The probe is characterized by also comprising an acceleration sensor used for sensing motions of the probe and generating motion data of the probe based on the motions of the probe; an interface board connected with the acceleration sensor; and an active probe interface connected with the interface board, and used for sending the motion data to a sensor interface of the oscilloscope. According to the invention, when a user detects a detected signal which is relatively far from the oscilloscope, the oscilloscope can be controlled easily, the signal can be displayed completely, and operation can be carried out with no need of returning to the oscilloscope position.