The invention discloses an LCD type helmet display driving circuit based on an FPGA. The functions of video signal decoding, video signal processing, brightness adjustment, temperature control and the like are achieved. The LCD type helmet display driving circuit comprises an FPGA control module, a video decoding module, a communication module, an LED backlight driving module, a heating control module, a D/A conversion module, a power supply module, an interface card, an LCD screen and an LED backlight board. The FPGA control module is respectively connected with the video decoding module, the communication module, the LED backlight driving module, the heating control module, the D/A conversion module and the power supply module. The LCD type helmet display driving circuit solves the problems that power consumption is too large and the board area is too large due to a conventional MCU+ASIC chip system scheme. Due to the parallelism of the FPGA implementation process, the reliability of the program execution process is greatly improved. The complexity of design and the purchase difficulty of chips are simplified. The LCD type helmet display driving circuit has the advantages of being high in resolution, high in brightness, low in power consumption, small in size, good in environment adaptability and the like.