The invention relates to a vehicle-mounted digital television receiver which has the characteristics of low power consumption, low cost, low volume, high performance, short development period and the like and particularly has a wide market prospect in vehicle-mounted and portable markets. The vehicle-mounted digital television receiver disclosed by the invention comprises a tuner module, a demodulation module, a decoding module, a power supply module, an audio processing output module, a video processing output module, an infrared remote control module, an SD storage module and a FLASH module; the signal input end of the decoding module is respectively connected with the signal output end of the demodulation module and the signal output end of the infrared remote control module; the demodulation module is connected with the tuner module; the signal output end of the decoding module is respectively connected with the signal output end of the audio processing output module and the signal output end of the video processing output module; the decoding module is respectively connected with the SD storage module and the FLASH module; and the power supply module respectively supplies power to the tuner module, the demodulation module, the decoding module, the audio processing output module, the video processing output module and the infrared remote control module.