The utility model discloses a high accuracy high frequency bridge moves deflection measurement system has solved prior art precise monitoring demonstration in real time storage and has been used for calculating the problem that the bridge moved the original data of amount of deflection. The utility model discloses a fixed mounting is in the pier middle part and be equipped with basic station microwave emitter and basic station microwave receiver's measurement basic station, and quantity is more than two, the symmetry is installed in the bay both sides and is equipped with measurement station microwave emitter and measurement station microwave receiver's measurement station beacon, the adc that is connected with the measurement basic station to and logical threading box is connected the PC that just is equipped with the display with adc, measure the basic station and pass through little wave point point to -point communication with the measurement station beacon. The utility model discloses simple structure, design scientific and reasonable, measurement accuracy is high, and application scope is wide.