Cold Storage is a key point of cold chain logistics. In this article, the cooling capacities of water, slurry ice and seawater slurry ice were compared, and results showed that both slurry ice performed better than water. Furthermore, differences between seawater ice and slurry ice were analyzed, and experimental results showed that seawater ice has more advantages as coolant for cold storage in the coastal areas. On the basis of the study, we put forward a new design of high temperature cold storage for coastal areas (inland cities).