The invention discloses a metal corrugated pipe expansion joint pressure resistance test device for a falling film pipe. The test device comprises an outer groove flange, an outer boss flange, an inner groove flange and an inner boss flange; an outer sealing ring is arranged at the matching position of the outer groove flange and the outer boss flange, and an inner sealing ring is arranged at thematching position of the inner groove flange and the inner boss flange; the test device further comprises a stepped screw rod; one end of the stepped screw rod is matched with the outer groove flangeand the outer boss flange, and the other end of the stepped screw rod is matched with the inner boss flange and is locked on a step of the stepped screw rod through a nut; and the inner groove flangeis matched with the inner boss flange through fixing bolts. According to the structure, an expansion joint of a corrugated pipe can be limited in the axial direction after being assembled, so that axial stretching deformation does not occur and subsequent shaping work is reduced. Meanwhile, the sealing rings are forced to generate large deformation to form seal, so that the sealing reliability ishigh. The test device is reusable, is convenient and fast, greatly improves the production efficiency and reduces the production cost.