The invention discloses a breaker contact engagement depth measuring device meeting the requirement.The breaker contact engagement depth measuring device comprises six sets of displacement sensors which are mounted in counterbores in six moving contacts of the phase A, the phase B and the phase C of a handcart type breaker of a high-voltage switch cabinet respectively, a power line and a signal line are guided out of a circumferential gap of the tulip contact, and guided out of the high-voltage switch cabinet through the space of the handcart type breaker to be connected with a data processing device, and the data processing device is connected with a display device.The breaker contact engagement depth measuring device is reasonable in structure, and measurement is convenient and accurate.