The calculation model was established through analyzing the influencing factors of returnable packaging investment volume based on the logistics of automobile industry. Combined with case study, the correctness of calculation model was validated. The selection and effect of the value of its safety factors were explained, and the application of the calculation model in three conditions was discussed, which were same annual volume of project, different annual volume of project, and different lifetime between outside and inside returnable packaging. This calculation model can evaluate the returnable packaging investment volume and packaging cost exactly, which will avoid packaging shortage or packaging cost increasing and waste caused by insufficient or excessive investment. The model can also be used to calculate the returnable packaging investment volume in other industries' logistics, such as food, agricultural and sideline products industries.