Abstract: In order to evaluate degree of damage caused by collision between Cerasus humilis and equipment.Relationship equation of fruit deformation and deformation energy was established to evaluate degree of fruit damage.The quasi-static compression test showed that deformation energy was less than 28.56×10-3 J，and the fruit was slightly damaged.When the deformation energy was（28.56~195.57）×10-3 J，the fruit produces different degrees of moderate damage，severe damage and rupture damage.The drop impact test of Cerasus humilis fruit showed that bounce height decreases as the mass of fruit increases（r2=0.880 7）.As the falling height increased，the rebound height increased in accordance with the cubic curve（r2=0.825 5）.The deformation energy increased linearly（r2≥0.994 2），and the maximum was 43.9×10-3 J.Critical height of equivalent damage was 2.97 m.Mechanical harvesting can meet requirements of Cerasus humilis fruit picking.