The invention provides an infrared thermal imaging network transmission system based on an SOC (System-on-a-Chip), and belongs to the technical field of application of photoelectric products. The system comprises an infrared probe, a bias voltage generation circuit, an analog signal modulation unit, the SOC, a DDR (Double Data Rate), a FLASH, a temperature control module, a motor module, a networktransmission module and an SD (Secure Digital) card. An input end of the infrared probe is connected with an output end of the bias voltage generation circuit; an output end of the infrared probe isrespectively connected with input ends of the analog signal modulation unit and the temperature control module; output ends of the analog signal modulation unit and the temperature control module arerespectively connected with an input end of FPGA (Field-Programmable Gate Array) in the SOC; an output end of the FPGA is respectively connected with input ends of the bias voltage generation circuitand the motor module; an output end of HPS (High Performance switch) in the SOC is connected with the network transmission module. According to the infrared thermal imaging network transmission systembased on the SOC (System-on-a-Chip) disclosed by the invention, infrared imaging acquisition and pre-processing are partially carried out by adopting the FPGA, a processed image is transmitted to theHPS through an internal bus AXI of the SOC chip, a Linux operation system is built on the HPS, and the processed image is sent to a page of a PC browser so as to be displayed in real time.