The present invention discloses a non-linear analog/digital conversion linearization processing method based on FPGA (field-programmable gate array) control. The method comprises the following steps: controlling an analog/digital converter to convert signals by a finite-state machine in an FPGA, wherein the conversion state of the analog/digital converter comprises an initial state, a conversion starting state, a conversion completing judgment state and a data output state; transmitting converted data signals to the FPGA to implement linearization processing by the analog/digital converter; implementing repeated measurement for a plurality of times to compute an average value of multiple groups of obtained data which are subjected to linearization processing; and transmitting averaged data signals to an upper computer to implement denoising. According to the non-linear analog/digital conversion linearization processing method disclosed by the invention, the data signals are subjected to linearization processing through the FPGA, and then are measured for a plurality of times to obtain the average value so as to ensure that troubled division calculation can be saved, and white noises mixed in the signals can be finally removed, and thus a data exception phenomenon existing in a process of averaging A/D output when the non-linear A/D output is about 0V can be eliminated, and a stable data output can be obtained.