The invention belongs to a sensitive structure, and particularly relates to a tuning-fork type micro-electromechanical gyro sensitive structure with a decoupling function. The tuning-fork type micro-electromechanical gyro sensitive structure with the decoupling function is distributed in a left-right symmetric mode, and a left half body structure and a right half body structure are each composed of a driving frame, a driving detection switching frame and a detection frame, wherein the driving frame is arranged on the outermost side, the detection frame is arranged on the innermost side, the driving detection switching frame is arranged in the middle, and the left half body structure and the right half body structure are connected into a whole through the driving frames and the driving detection switching frames; each driving detection switching frame is provided with an orthogonal coupling error suppression structure. The tuning-fork type micro-electromechanical gyro sensitive structure with the decoupling function has the advantages that the symmetric type three-frame design is adopted, and the three frames are the driving frames, the driving detection switching frames and the detection frames; meanwhile, single-degree-of-freedom beams are adopted to connect all the frames, the degrees of freedom of motion of all the frames and mass blocks are limited, bidirectional decoupling between driving and detecting is achieved, and coupling errors can be suppressed to a large extent.