An artificial soil structure includes a water shield layer provided on a soil layer and including water repellent sand processed by water repellent treatment, a water retentive layer provided on the water shield layer and including water retentive sand with no water repellent treatment, and a water repellent soil body provided partially in the water shield layer so as to penetrate the water shield layer and be in contact with the soil layer and the water retentive layer, the soil body including sand processed by water repellent treatment, wherein the water shield layer has water infiltration pressure higher than that of the water repellent soil body.土壌層上に配置され、撥水処理された撥水砂で構成される遮水層(2)と、遮水層上に配置され、撥水処理されずに保水可能な砂で構成される保水層(1)と、遮水層の一部に配置され、遮水層を貫通し、土壌層と保水層とに接触しかつ撥水処理された砂で構成される撥水機能付き土壌体(4)とを備える人工土壌構造体であり、かつ、遮水層の水浸入圧は、前記撥水機能付き土壌体の水浸入圧よりも高くしている。
