Fire-fighting digital multimeter with protection function

The utility model relates to the field of fire-fighting auxiliary instruments, and discloses a fire-fighting digital multimeter with a protection function, the fire-fighting digital multimeter comprises a multimeter main body, a display screen and a plurality of wiring holes, the two sides of the outer surface of the multimeter main body are fixedly connected with support frames, a baffle plate is arranged above the multimeter main body, and the support frames are fixedly connected with the display screen. The outer surface of the supporting frame is slidably sleeved with a sleeve block, one side of the outer surface of the sleeve block is fixedly connected with the corresponding corner of the outer surface of a baffle, and the sleeve block slides on one side of the outer surface of the supporting frame, so that the baffle can move above the universal meter main body, and the baffle completely shields the upper surface of the universal meter main body; the wiring hole and the display screen are prevented from