Throughfall, stem flow and canopy interception of three types of forest (Pinus tabulaeformis forest, Larix principis-rupprechtii forest and Populus davidiana forest) were studied in Liaoheyuan Natural Reserve, Hebei province, through a field investigation from May to September in 2013 and 2014. The results showed that:(1) Throughfall rates of P. tabulaeformis forest, L. principis-rupprechtii forest and P. davidiana forest were 78.8%, 81.1% and 83.8%, respectively. Throughfall amounts of three forests all showed positive linear correlation with rainfall amounts outside the forests. The monthly variations of throughfall were consistent with the monthly trend of rainfall outside the forest. Throughfall happened when rainfall exceeded 1.5 mm for P. tabulaeformis forest, 0.9 mm for P. davidiana forest and 1.2 mm for L. principis-rupprechtii forest. Stem flow rates in the three types of forests were 0.8%, 1.0% and 3.7%, respectively, and the regression analysis showed that stem flow amounts of the three forests had positive linear relationship with rainfall amount. (2) The capacity of canopy interception ranked from higher to lower as P. tabulaeformis forest (20.4%)>L. principis-rupprechtii forest (17.9%)>P. davidiana forest (12.4%). The canopy interception of P. tabulaeformis forest was significantly greater than that of the P. davidiana forest, which was more obvious under small rainfall events, and the rainfall characteristics and canopy structure had an influence on the canopy interception.