The utility model discloses a portable infrared thermal imaging device. Fixing support, the supporting plate is mounted at the upper end of the fixed bracket; the wireless infrared thermal imaging device is arranged on the supporting plate; the wireless infrared thermal imaging device comprises a shell, wherein the control panel is arranged in the shell; wherein the display screen is installed onthe surface of the shell, the control panel comprises a main control module, a power supply module connected with the main control module, an infrared sensor, a wireless communication module and a laser ranging module, detection holes are formed in the positions, corresponding to the infrared sensor and the laser ranging module, of the shell, and the display screen is connected with the control panel. The utility model provides a portable infrared thermal imaging device, which performs data transmission in a wireless mode, can realize remote monitoring and is convenient to carry.