[Objective] The canopy hydrological effects of four economic forests in Taihang Mountains, Hebei Province were studied in order to reveal their water conservation functions.[Methods] Four main economic forests including walnut, apple, apricot, and cherry in the southwest mountainous area of Shijiazhuang City were selected. The throughfall was measured by rain tube, and the stemflow was measured by trunk winding method. The hydrological effects of canopy in these forests were then analyzed.[Results] The trunk runoff and throughfall of the four economic forests increased with the rainfall. The canopy interception increases with the rainfall until which reached 45.1 mm, and later the increasing trend slowed down. When the rainfall ranged from 14.3 to 29.5 mm at one precipitation event, the canopy interception of the four economic forests was the largest with 20% of interception percentage at least. When the rainfall was constant, the canopy interceptions of four economic forests were different, with following order, cherry > Apple > walnut > apricot, which was consistent with the order of crown density. The order of trunk runoff respected the following order, cherry > apricot > walnut > apple, which was basically consistent with the order of averaged base diameter.[Conclusion] The redistribution effect of canopy on the rainfall was obvious in the four economic forests, mainly related to the rainfall, and also influenced by the forest type, canopy density, and base diameter.