The invention discloses a plate-fin EGR (Exhaust Gas Recirculation) cooler with a heat insulation function. The two ends of a shell are provided with an air inlet flange and an air outlet chamber, wherein the shell is provided with a water inlet pipe and a water outlet pipe at positions close to the air inlet flange and the air outlet chamber respectively; a heat dissipation core component, an air chamber and a corrugated pipe are arranged in the shell; a main board at one end of the heat dissipation core component is connected with the shell and the air outlet chamber, and a main board at the other end of the heat dissipation core component is connected with one end of the air chamber; the other end of the air chamber is connected with one end of the corrugated pipe; the other end of the corrugated pipe is connected with the shell and the air inlet flange; and a heat insulation pipe which is communicated with the air inlet flange is arranged in the corrugated pipe. According to the plate-fin EGR cooler, the main board at the other end of the heat dissipation core component is flexibly connected to the shell through the air chamber and the corrugated pipe; axial deformation produced by a flat pipe component unit is transferred to the corrugated pipe through the air chamber and is absorbed by the corrugated pipe; and thus, the axial thermal stress produced by deformation of the flat pipe component unit under heating is eliminated.