Moisture measuring device

The utility model discloses a moisture measuring device. The moisture measuring device comprises a base, a weighing table located on the base and a protective cover arranged on the outer side of the weighing table in a covering mode. The protective cover comprises a top cover and a side wall which are connected, the top cover is located at the top of the protective cover, the side wall is arranged in a surrounding mode and located on one side of the top cover, a heating part is arranged in the protective cover, heat dissipation through holes are formed in the top cover, and an air blowing piece used for generating air flow is installed on the outer side of the top cover. An air outlet part of the air blowing piece faces the heat dissipation through hole, and a diffusion through hole is formed in the side wall. According to the moisture measuring device provided by the invention, after the moisture of a preorder sample is measured, the temperature in the protective cover is quickly reduced to the initial tempe