Provided is a cultivation device capable of controlling ground temperature at a low cost and at a relatively high accuracy. The cultivation device according to one embodiment of the present invention comprises a medium part in which a crop is planted and a cultivation liquid feeding mechanism which feeds a cultivation liquid to the medium part wherein the medium part has an area to which the cultivation liquid is fed by a capillary phenomenon and a temperature controlling mechanism which controls the temperature of the cultivation liquid to be fed to the medium part is further provided. It is preferred that: the cultivation liquid feeding mechanism comprises a cultivation liquid tank for reserving the cultivation liquid a reservoir tank for primarily reserving the cultivation liquid fed from the cultivation liquid tank and a liquid supply part which supplies the cultivation liquid from the reservoir tank to the medium part and the temperature controlling mechanism is attached to the cultivation liquid tank or the liquid supply part. It is preferred that: the cultivation device further comprises an auxiliary cultivation liquid feeding mechanism which feeds the cultivation liquid in the cultivation liquid tank to the medium part from above the temperature controlling mechanism is attached to the cultivation liquid tank and the cultivation liquid which is fed to the medium part by the auxiliary cultivation liquid feeding mechanism is circulated to the cultivation liquid tank via the reservoir tank.
