Abstract: The wall construction plays an important role in the fabrication price and the performance of the mini-cold storage. The calculation equation of the economic insulating layer thickness in different service life was derived through the life cycle economical analysis of the mini-cold storage. Based on this, the effect of the wall construction on the performance of the mini-cold storage was analyzed. The results show that the performance of the temperature drop has a strong relationship with the parameters of the wall construction, and with least relationship with the volume of the mini-cold storage.