A device for measuring a moisture content in soil according to an aspect of the present invention comprises: a conductive wire structure which can be inserted into soil, includes a first and a second conductive wire, and is formed to have a predetermined structure, the first and the second conductive wire being insulatively coated and extending in parallel to and adjacent to each other; a capacitance measurement circuit for measuring the capacitance between the first and the second conductive wire by using an alternating current power source; and a moisture content calculation unit for calculating a moisture content of the soil by using the measured capacitance.