The invention provides a dust removing device special for an electric shovel cabin, belongs to the technical field of electric shovel dust removing, and mainly solves the technical problems that the prior art is poor in filter performance, many in electric faults and difficult to maintain. The dust removing device comprises a dust removing mechanism and a fan and is characterized by further comprising a rainproof cover and a dust discharging mechanism. The top surface of the rainproof cover is of a hollow spire structure. The outer part of the lower portion of the rainproof cover is provided with a dusty-air inlet. A dust removing mechanism air inlet is adjacent to the dusty air inlet. The dust removing mechanism comprises a plurality of filter devices. A dust removing mechanism air outlet adjacent to the dusty air inlet is communicated with the air inlet of the fan through an air channel in the hollow rainproof cover. The fan is located on the upper portion of the rear portion of the cabin. The air outlet of the fan is communicated with the cabin. The dust removing device arranged on the rear portion of an electric shovel and located at the top of the cabin has the advantages that the dust removing device using the filter cylinder type filter device is convenient to maintain and high in filter and purification efficiency; by the rainproof cover, the dust removing device can adapt to severe weather, and the utilization rate of the dust removing device can be increased.