An air conditioner indoor unit with a dust-removal function comprises a dust-removal device (5), a middle frame (1) and a panel, wherein the dust-removal device is buckled on the middle frame of an air inlet of the air conditioner. The dust-removal device is mainly composed of a frame body, a high pressure generator, a filter screen, an anode, a cathode and an activated carbon net. A contact switch is arranged on a drive circuit of the dust-removal device and installed on the middle frame, and a contacting spot of the contact switch is arranged on the panel. Large-grained dust is attached to the filter screen, smaller-grained dust enters a high-voltage electric field which is between the anode and the cathode and deposits on the anode, the activated carbon filter screen absorbs the smaller-grained dust again, thus air which enters a heat exchanging device is cleaner and air supply of the air conditioner is cleaner and safer.