Litter and soil hydrological properties of four types of Pinus koraiensis plantations in the South branch of the Songhua river-Ashi river’s Headstream were studied by using field investigation and experiment analysis method. It was shown that the litter total storage capacity in four types of plantations were in descending order of Pinus koreansis plantation (12.57 t/hm2), Fraxinus mandshurica-Pinus koreansis mixed plantation (9.96 t/hm2), Phellodendron amurense-Pinus koreansis mixed plantation (8.27 t/hm2) and Juglans mandshurica-Pinus koreansis mixed plantation (6.35 t/hm2). The maximum water-holding rate of litters ranged from 391.87% to 573.93%, the modified precipitation interception rate of litters ranged from 262.71% to 409.61%, both the ranking order as follow: Juglans mandshurica-Pinus koreansis mixed plantation, Phellodendron amurense-Pinus koreansis mixed plantation, Fraxinus mandshurica-Pinus koreansis mixed plantation and Pinus koreansis plantation. In four types of plantations, both water holding capacity and water holding rate had remarkable logarithmic correlation with soaking time, while the absorption rate and soaking time was a power function. In the soil layer of 0—30 cm, the average soil bulk density was the smallest in Juglans mandshurica-Pinus koreansis mixed plantation (0.99 g/cm3), while it was the largest in Pinus koreansis plantation (1.04 g/cm3). Juglans mandshurica-Pinus koreansis mixed plantation showed the maximum soil porosity (58.77%), whereas Pinus koreansis plantation demonstrated the minimum soil porosity (56.22%), and the non-capillary porosity ranged from 2.96% to 5.85%, being in descending order of Juglans mandshurica-Pinus koreansis mixed plantation, Fraxinus mandshurica-Pinus koreansis mixed plantation, Pinus koreansis plantation and Phellodendron amurense-Pinus koreansis mixed plantation. The maximum water-holding capacity and available water holding capacity per 10 cm soil depth were in Juglans mandshurica-Pinus koreansis mixed plantation, reached 587.67 t/hm2 and 58.47 t/hm2 respectively. The mean of its initial infiltration rate, stable infiltration rate, and infiltration coefficient were largest in Juglans mandshurica-Pinus koreansis mixed plantation too, reached 3.64 mm/min, 2.78 mm/min and 1.10 mm/min, respectively. Judging from the hydrologic properties of litter layer and soil layer, the water conservation and storage capacity was the strongest in Juglans mandshurica-Pinus koreansis mixed plantation, while it was the weakest in Pinus koreansis plantation. The research results could provide evidence for soil and water conservation.