High-precision management and control system and method suitable for polluted soil excavation

The invention discloses a high-precision management and control system suitable for polluted soil excavation, which comprises an excavator, and a first positioning device, a second positioning device, a controller, a first tilt angle sensor, a second tilt angle sensor and an alarm device which are arranged on the excavator, and further comprises a positioning base station arranged in a construction site. According to the system, the three-dimensional coordinates of two points can be collected through the first positioning device and the second positioning device, the movable arm inclination angle and the bucket rod inclination angle are collected through the first inclination angle sensor and the second inclination angle sensor, the movement range of the tip end of the bucket can be calculated in combination with geometrical parameters of the excavator, and a construction boundary threshold value is preset in the controller; and when the movement range of the tip end of the bucket exceeds a construction bound