Evergreen broad-leaved forest is well-preserved, and is playing an irreplaceable role in water conservation and ecological regulation in forest areas in Mid subtropical zone. In order to investigate the canopy interception and allocation and evaluate forest hydrological function and benefit of the evergreen broad-leaved forest in mid subtropical area quantitatively, positioning experiments were implemented during two rainy seasons of from 2016 to 2017 in Mopan Mountain national nature reserve. The amount of throughfall, stemflow and precipitation were measured and interception loss was subsequently calculated. Based on the observations of 26 rainfall events, canopy interception process of evergreen broad-leaved forest was simulated using the modified Gash model. The results showed that most of the observed rainfall had the low intensity, low duration and moderate rain. The amount of rainfall, throughfall, trunk flow and canopy interception were 994.07 mm, 562.90 mm, 16.90 mm and 406.40 mm, respectively, during the study period. According to the modified Gash model, the simulated amounts of throughfall, stemflow and canopy interception were 548.63 mm, 21.75 mm, 403.28 mm, respectively, and their relative error were 2.60%, 22.29% and 3.34% respectively compared to the measured. The results of sensitivity analysis showed that the sequence of simulated results of canopy interception from large to small was c, , S, , St, Pt.