Rainfall interception in Chinese fir plantations varies with the age of the trees. Mature stands intercept more rain than young stands. Interception amount increases with rainfall, but the ratio decreases. Wet seasons have higher interception amounts but lower ratios compared to dry seasons. Small rainfall events lead to rapid changes in interception ratio. Chinese fir forests have little stemflow due to their crown shape and bark. A power model can describe the interception process for any age of stand. Canopy structure differences cause variations in interception among stands of different ages.