Under external loads, the vibration energy transfer from excitation position to the branches of fruit trees, and we analyze the effects of fruit tree morphology on energy transfer. Two "Y" type of fruit trees and three branches of fruit trees are chosen as the test samples, and the acceleration signal is fitted to get the acceleration function. Then the speed function can be obtained by the integral of the acceleration function and the kinetic energy of the measuring point on the branches of fruit tree can be also calculated.The kinetic energy we calculated can be regarded as external loads transfer to energy of each point. The value of the acceleration in the branches is accord with the variation of sine function under the sinusoidal excitation, and the branch acceleration signal frequency and the excitation frequency are almost the same. When the energy flowing goes through the bifurcation point, it would be shunted, and more energy move to the side branches with large diameter. The efficiency of transmitting energy in the trunk is higher than the lateral branch; When the excitation frequency is 20Hz, the efficiency of transmitting energy is better, and the maximum of the instantaneous velocity of fruits and amplitude of swing are much larger. So, fruits become easier to fall off.