Temperature measurement host of distributed optical fiber temperature measurement system

The utility model relates to the technical field of distributed optical fiber temperature measurement, in particular to a temperature measurement host machine of a distributed optical fiber temperature measurement system, which comprises a host machine box body, a fixed screen plate is arranged in the host machine box body, and the fixed screen plate is used for fixing electronic components of the temperature measurement host machine. A partition plate is arranged below the fixed net plate, a sliding through groove is formed in the partition plate, a supporting frame is arranged in the sliding through groove in a sliding mode, a cooling fan is fixed in the supporting frame, a plurality of first ventilation through holes are formed in the bottom of the sliding through groove, and a plurality of second ventilation through holes are formed in the bottom of the sliding through groove. A telescopic air cylinder is horizontally arranged on the left side face of the mainframe box body, and a piston rod of the telesc