To provide a drying device and drying method for soil sample, capable of drying the soil sample in a short time without scattering and deteriorating contaminated materials and the like, with the device of a simple constitution.

The device for drying the soil sample to analyze soil contamination, has a chamber receiving the soil sample, a microwave irradiation means for irradiating the soil sample with microwaves, a pressure reducing means for reducing a pressure of the chamber, and a capillary inserted into the chamber.