The invention provides an indicating piece and a crushing indicating device. The indicating piece is used in cooperation with a first base body and a second base body which can move relatively, and comprises an indicating piece mounting part and an indicating part which are arranged by an angle, the mounting part is mounted on the first base body, and the indicating part can be in contact with thesecond base body in the movement process of the first base body and the second base body to generate deformation relative to the mounting part. The crushing energy absorbing device comprises a forcetransmitting part and a crushing pipe, and the force transmitting part is inserted in a pipe port of the crushing pipe; the crushing indicating device further comprises the crushing deformation indicating piece, the crushing deformation indicating piece comprises the indicating piece mounting part and the indicating part, the indicating piece mounting part is mounted on the force transmitting part, the indicating part and the indicating piece mounting part are arranged by an angle, and can be in contact with the caliber of the crushing pipe in the process that the force transmitting part movestowards the crushing pipe, and then deformation occurs. By means of the indicating piece and the crushing indicating device, a simple structure is adopted for detecting and indicating the tiny strokeand precise deformation of the crushing pipe, the principle is simple, and the use is convenient.