High-definition video and audio decoder with efficient heat dissipation and dust prevention

The invention provides a high-definition video and audio decoder with efficient heat dissipation and dust prevention and relates to the technical field of video and audio decoders. The efficient heatdissipation and dustproof high-definition video and audio decoder comprises a shell, wherein a plug is fixedly installed at a rear end of the shell, partition plates are fixedly connected to the leftside and the right side in the shell, a motor is fixedly installed on the outer sides of the partition plates in the shell, and first rotating shafts are in transmission connection with the front endand the rear end of the motor; and a fan is fixedly mounted at the periphery of the first rotating shaft. According to the high-definition video and audio decoder with efficient heat dissipation and dust prevention, hot air in the shell is extracted by utilizing an injection and suction principle, and the heat dissipation holes are automatically closed when heat dissipation is stopped, so that dust entering the decoder is r