Aero-engine and guider sealing structure thereof

The invention discloses an aero-engine and a guider sealing structure thereof, the guider sealing structure comprises a guider and a cartridge receiver, the guider comprises a lower margin plate and a plurality of guide blades distributed on the lower margin plate, the guider is integrally formed, a plurality of expansion gaps distributed at equal intervals in the circumferential direction of the lower margin plate are formed in the lower margin plate, and the lower margin plate and the guide blades are connected through the expansion gaps. Each expansion gap is arranged between two corresponding adjacent guide blades so as to divide the lower margin plate into a plurality of sections; cold gas flow channels are formed in the two ends of the casing in the axial direction of the casing, gas baffles are arranged on the outer wall, facing the lower edge plate, of the casing, and the gas baffles are arranged at intervals relative to the lower edge plate and used for shielding the expansion gap in the radial direc