Soil humidity measuring instrument

The utility model discloses a soil humidity measuring instrument. The soil humidity measuring instrument comprises a handle 1, a switch 2, a display screen 3, a main cabinet 4, a rod body 5, controls 7, a humidity sensor 8 and an electric drill bit 9, wherein the handle 1 is embedded in the two sides of the main cabinet 4; the display screen 3 is at the upper part of the main cabinet 4 and is used for displaying a measured soil humidity value; the switch 2 is arranged in the middle of the handle 1; the main cabinet 4 is connected with the electric drill bit 9 through the rod body 5; the humidity sensor 8 is installed at the tip of the electric drill bit 9; scales 6 are carved on the surface of the rod body 5, so that soil depths corresponding to different soil humidity can be accurately displayed conveniently; 3-5 controls 7 are arranged inside the electric drill bit 9; the controls 7 have the same length. The soil humidity measuring instrument is convenient to carry, can be easily inserted into soil under a microdynamic action during soil humidity measurement, and can measure soil humidity at different depths, so that the soil moisture measurement is efficient and quick.