Objective To analyze the force and structure changes of falling objects, with the purposes of improving the shock resistance as well as reducing the drop breakage probability and damage. Methods Product falling simulation based on SolidWorks could vividly simulate the falling process of a certain type of ceramic cup, which showed the speed, acceleration and stress changes of each node during the dropping. Results The maximum stress occurred at 5.534 μs of the whole 19.365 μs vertical dropping process and kept acting on the center of the bottom of cup. After the cup structure was improved, the maximum stress was reduced from 1.720×108 N/m2 of critical stress of breakage to 1.549×108 N/m2. The strain on the cup was greatly improved. Conclusion Combining the definition and application of product fragility, product fragility estimation with dropping stimulation can be applied in product design and package guiding, which shortens the development period and reduces the cost while improving the product quality.