Multifunctional detector for fire-fighting site

The utility model is applicable to the technical field of fire-fighting detection equipment, and provides a multifunctional detector for a fire-fighting site, which comprises a support plate, a gas detection cylinder, a radioactivity detection cylinder, a spectrum receiving cylinder, a detector host and a cable interface, and is characterized in that a detector indicator is rotated to the gas detection cylinder, and gas on the fire-fighting site is sucked into the interior for analysis; an analysis result is displayed on a screen of the detector; the indicator of the detector is rotated to the radioactivity detection cylinder, radioactive substances on a fire-fighting site are sucked into the detector to be analyzed, and an analysis result is displayed on a screen of the detector; when an indicator of the detector is rotated to the spectrum receiving cylinder, a spectrum of a fire-fighting site is received and analyzed, an analysis result is displayed on a screen of the detector, the handle is vertically arra