Hand-held radiation measuring instrument fixer

The utility model relates to the technical field of radiation measurement, in particular to a handheld radiation measuring instrument fixer, which comprises a fixing shell and an electric telescopic rod, the fixing shell comprises a first shell and a second shell, one surface of the first shell is concavely provided with a fixing cavity, one end of the first shell is provided with a fixing port communicated with the fixing cavity, and the other end of the first shell is provided with a fixing hole communicated with the fixing cavity. A radiation measuring instrument can be arranged in the fixing cavity, and a probe of the radiation measuring instrument can penetrate out of the fixing cavity through the fixing opening; the fixing opening is provided with a protective film. The periphery of the second shell is connected with the first shell through mounting screws, and the second shell seals the fixing cavity; and one end of the electric telescopic rod is fixedly connected with the second shell. The distance be