The invention relates to an end-face rubber sealed concrete impermeability test device, and belongs to the technical field of building material detection. The end-face rubber sealed concrete impermeability test device comprises a die sleeve and a base plate, wherein the die sleeve adopts a hollow frustum metal barrel body; bolt grooves are formed in a flange at the large end of the die sleeve; a rabbet is arranged at the inner edge of the small end; a sealing pad is arranged on the lower surface of the rabbet; a sealing ring groove is formed in the base plate and used for filling a lower sealing pad; T-shaped bolt grooves are formed in the peripheral side of the base plate; the base plate is mounted on a test tabletop. In a test, a test piece is placed on the base plate and sleeved with the die sleeve, and then T-shaped bolts are used for fixing the die sleeve and the test piece. The edge girdles on the upper and lower end faces of the test piece are sealed by rubber pads; a sealing water cavity is formed between the base plate and the bottom surface of the test piece. By the adoption of the test device, the sealing rubber pads can be repeatedly used, and the operation is convenient, simple and free of pollution. The test piece and the die sleeve can be carried independently; the die sleeve and the base plate are fixed through the T-shaped bolts; the operation is time-saving and labor-saving.