To provide a method for efficiently removing substances such as heavy metals and salts existing in a soil.

The method removes a target substance existing in a soil from the soil in the state dissolved in a solvent. In the removing method of a substance in a soil, it is characterized that the target substance is removed from the soil with the solvent or the target substance is removed from the soil with a fluid by transferring the target substance into the fluid by passing a different fluid from the solvent into the soil and replacing the solvent in the soil with the fluid.