The invention relates to an oil removing device, in particular to a horizontal-type oil removing device for rare earth feed liquid. The invention aims to provide the horizontal-type oil removing device for the rare earth feed liquid. In order to achieve the technical aim, the horizontal-type oil removing device for the rare earth feed liquid comprises a filter cartridge, a feeding device, an oil absorption device, an L-shaped connecting plate, a piston, a long-stroke air cylinder I and the like. The oil absorption device is arranged at the right side of the feeding device. The L-shaped connecting plate is arranged at the left side of the feeding device. The lower end of the L-shaped connecting plate is connected with the top of the filter cartridge in a welding mode. The piston is arranged inside the filter cartridge and is further matched with the filter cartridge, and the piston and the filter cartridge are arranged to be movably connected. The horizontal-type oil removing device for the rare earth feed liquid is of a horizontal-type structure, no high and large space can be occupied, there is no need for enterprises to set up tall workshops, and the occupation of business capital is reduced.