Abstract: This paper intends to reveal relations among fruit drop height, fruit weight, impact surface material and damage factors（collision area, damage ratio and damage stress） by use of the pressure sensitive film and in view of the loquat mechanical properties and attempts to reduce the mechanical damage caused by collision, vibration and extrusion in the process of harvesting, transporting and preserving the fruit.Results from the loquat collision experimenting test indicate that,as the impact energy gets over 0.147 J, fruit weight being 60-70 g and drop height 0.3-0.5 m, the foam board works the best as loquat collecting material. The maximum height in the range of safe drop is 0.4 m, which, when taken as designing reference for a harvesting device, is recommended as the extreme measure of distance vertically between the cutting mechanism and the collecting device. The drop damage factors and collision damage characteristics of loquat fruit having been studied, the experiment builds up a theoretical base on which the optimized design of a harvesting device and the loss prevention in follow-up processing steps can be further researched upon.