The invention relates to the technical field of relays, and discloses a relay base. The relay base comprises a base body with a U-shaped longitudinal section. A mounting base is arranged at the center of the base body. A fixing frame is arranged on the base body. A bezel block is arranged between the fixing frame and the mounting base. A telescopic part is connected between the bottom of the bezel block and the base body. The telescopic part comprises an outer sleeve and an inner sleeve rod. The outer sleeve and the inner sleeve rod are slidably connected. The outer sleeve is connected with the base body. The inner sleeve rod is connected with the bottom of the bezel block. A first spring is connected between the bottom of the outer sleeve and the bottom of the inner sleeve rod. The bezel block is provided with a projection. The base body is provided with a chute. The fixing frame is slidably connected with the chute. A second spring is connected between the side of the fixing frame and the side wall of the base body. A slider abutting against the bezel block is arranged on the fixing frame. According to the technical scheme, a relay can be conveniently plugged and taken out.