The invention relates to a tin bath outlet end sealing device. The tin bath outlet end sealing device comprises a tin bath top cover (1) connected with an outlet suspension wall (2). An outlet lip brick (9) is arranged below the tin bath top cover (1) and is connected with a transition roller table conveying component (12). The outlet suspension wall (2) is connected with a transition roller table top cover (13). The tin bath outlet end sealing device is characterized in that the transition roller table top cover (13) moves by a certain distance towards the direction away from the outlet suspension wall to enable movable check curtains (5) 1#, 2# and 3# to be correspondingly matched with conveying roller beds (7) 1#, 2# and 3# below respectively; the tin bath top cover (1) and the outlet suspension wall (2) connected with the same synchronously extend outwardly by a certain distance to be connected with one side of the transition roller table top cover (13). By the tin bath outlet end sealing device, front-back differential pressure of the movable check curtains is eliminated, and ash in a triangular area is discharged from two sides of a glass tape easily under the action of a linear motor; tin liquor is not easy to contact with oxygen, and the problem of oxidization of the tin liquor is solved.