The utility model discloses a digital audio and video transmitter that electric power hand -held type is wireless, including fuselage and built -in battery, the inside video coding board who connects gradually, baseband modulation board and the power amplifier who adopts the COFDM digital modulation of still installing of fuselage, power amplifier still is connected with the antenna, and wherein video coding board is for adopting the MPEG24 or the video coding board of encoded mode H. 264, the utility model discloses the complete machine integrated level is high, and is small, can conveniently hand -carry to can transmit the fine definition image in real time high -efficiently, be suitable for popularization and application.