Blade root embedded part and fan blade root connecting structure

The invention relates to a blade root embedded part which comprises an embedded part main body (1021) and a plurality of bosses (1022) arranged along the outer surface of the embedded part main body (1021), the bosses (1022) are axially arranged at intervals along the embedded part main body (1021), and through holes (1023) used for bolt connection are formed in the centers of the bosses. Compared with the prior art, according to the blade root embedded part, the bosses used for being connected with the shear-resistant bolts are arranged in the axial direction of the body at intervals, and by means of the embedded part, the tensile type blade root connection design is changed into the shear-resistant type blade root connection design. Due to the fact that the pretightening force of the anti-shearing bolt generates pressure between the blade root and the variable-pitch bearing, the friction force between the blade root and the variable-pitch bearing is increased, the friction force can resist a part of shearin