The invention discloses a pier safety detection target detection system and belongs to the technical field of pier safety monitoring. The system comprises a bridge pier; the right outer wall of the bridge pier is provided with a detection device; the right outer wall of the detection device is provided with an angle detection module and a distance detection module; the angle detection module and the distance detection module are both in electrical output connection with a collection module used for collecting information; the collection module is in electrical output connection with a single-chip microcomputer used for analyzing and processing information; and the single-chip microcomputer is in electrical input connection with a timing module used for controlling data transmission interval time, a comparison module used for comparison and an input module used for inputting data. According to the device, the inclination degrees of piers and a distance between the piers are detected through the angle detection module and the distance detection module, and data information is remotely transmitted to the display module so as to be displayed; a worker can remotely know some conditionsof the piers in real time; and the use safety of the piers is improved.