The invention discloses a LIFI (Light Fidelity) transmitting and receiving device convenient for mounting and dismounting. The LIFI transmitting and receiving device convenient for mounting and dismounting comprises a vehicle body, wherein a mounting base is fixedly connected with the top of the vehicle body; the mounting base is connected with the LIFI transmitting and receiving device; two firstthrough holes are set at the upper end of the mounting base; a first slide block and a second slide block are in slide connection in the first through holes; a cavity is set in the mounting base; a limiting plate is in slide connection in the cavity; a first groove and a second groove are set on the limiting plate; limiting blocks are welded on the side walls of the first slide block and the second slide block which are located in the cavity; the two limiting blocks are located in the first groove and the second groove on the limiting plate; a first fixing rod and a second fixing rod are fixedly connected with the lower ends of the first slide block and the second slide block; and the first fixing rod penetrates the mounting base. According to the device, the LIFI transmitting and receiving device can be mounted and dismounted conveniently for maintenance and reparation, a tool is avoided, and the mounting and dismounting are relatively convenient.