Abstract: Based on the observation data,the rainfall interception capacity of the canopy in plantation and natural forest stands and its relation to rainfall were examined using the method of taking maximum under the same rainfall. The results showed that the rainfall interception capacity of plantation forest increased rapidly with the increase of rainfall,because of its even distribution of branches and leaves,which was higher under low rainfall less than 30mm, and the saturation interception capacity was easily reached,depending on the quantity of branches and leaves in the canopy. Although the interception capacity of natural forest was relatively weak under low rainfall less than 30mm,compared with plantation forest, it was much stronger under heavy rainfall more than 30mm. The saturation interception of natural forest was larger than that of plantation forest.