The utility model provides a device for measuring material moisture. The device comprises a microwave signal source for generating a microwave signal; a power splitter which is used for dividing the microwave signal into two paths of microwave signals and connected with a microwave signal source; a microwave transmitting antenna which is connected with the power splitter to transmit one of the two paths of microwave signals to a material to be measured; a microwave receiving antenna for receiving a microwave signal transmitting through the material; a microwave network which is connected with the microwave receiving antenna and the power splitter to determine phase changes and amplitude changes of the microwave signal; an ultrasonic ranging sensor for measuring a distance between the upper surface of the material and the ultrasonic ranging sensor; a low-frequency signal acquisition circuit; a wireless communication device; and a computer used for calculating moisture content in the material. The device for measuring material moisture provided by the utility model can effectively improve the accuracy of moisture measurement. In addition, the device can remotely measure the material moisture and has the advantages of simpleness and convenience.