The utility model relates to an elevator (1) and lift -cabin door device (20), the lift -cabin door device includes: door guide rail (26) with last bank bottom plate (25) integrated into one piece, stride with the concave part (23a) of periphery and establish on the door guide rail, can follow rolling pulley on the guide rail (23), passing -through door gallows (22) AND gate pulley is connected, accompanys roll and door leaf (21) of switch of a pulley, and, have from the inboard outstanding convex part (27b) of the last orientation concave part of door pulley for anti -drop part (27) that thepulley from derailing prevent. The convex part of anti -drop part extends along the direction of door guide rail, nevertheless has and is interrupted district (S). Be interrupted the district and setup in the width of opening one's mouth widely most of lift -cabin door device, and in region that elevator normal operating state xiamen pulley can not pass through. In view of the above, maintenanceperson person can stand and load and unload the operation of door leaf in layer station or car, has reduced the degree of difficulty and the danger of operation.