The work aims to finish corrugated cardboard express cushion packing design of preposition water purifier and protect products in circulation. Corrugated cardboard was selected based on features and logistical environment of the product. Cushion structure and express packaging were designed for water purifier by Artios CAD. At the same time, relevant tests were carried out. With the corrugated cardboard express cushion structure, the product kept intact after 107 cm drop test, 4 h random vibration test and 50 kg pressure test. In conclusion, as long as the cushion structure design is reasonable and the selected material is suitable, corrugated cardboard can fully satisfy express cushion packaging requirements of water purifier.