High-precision environment-friendly immersed tube foundation bed desilting platform

The invention provides a high-precision environment-friendly immersed tube foundation bed desilting platform which comprises a self-floating platform and a longitudinal moving trolley. A first moon pool is arranged in the middle of the self-floating platform, longitudinal rails are symmetrically arranged at the two sides of the first moon pool, the longitudinal moving trolley is arranged above the first moon pool in a crossing mode, and the longitudinal moving trolley is in sliding connection with the longitudinal rails; a transverse moving trolley is arranged in the middle of the longitudinal moving trolley, the transverse moving trolley is in sliding connection with the longitudinal moving trolley, a dredging pipe is arranged on the transverse moving trolley, the upper portion of the dredging pipe is connected with a mud discharging pipe, and the bottom of the dredging pipe is connected with a dredging head; and two longitudinal moving winches are oppositely arranged at the two sides of the self-floating pl