The utility model relates to an elevator and a landing door thereof. The landing door is provided with a door leaf and a landing door frame. The landing door frame (210) comprises two vertical frames(214) and an upper frame (216) connected with the tops of the two vertical frames. The vertical frame has a vertical frame main surface (214a), a vertical frame side surface (214b), and a vertical frame back surface (214c). The upper frame has an upper frame main surface (216a) and an upper frame side surface (216b). Protrusions (314) extending in the longitudinal direction are provided at the intersections of the vertical frame side surfaces and the vertical frame back surface of the top section (214d) of the vertical frame. A recessed portion (316) matching the protruding portion is providedat an intersection of an upper frame main surface and an upper frame side surface of a lateral end portion (216c) of the upper frame. When the protruding part is matched with the notch part, the upper frame main face is connected with the top of the vertical frame, and the upper frame side face and the vertical frame side face are located on the same plane. Therefore, the vertical frame and the upper frame can be conveniently assembled.