To solve the problem on an ice making device where chlorine ions or metal ions are added for the antibacterial effects for water stored therein, while ice of unpleasant taste may be formed although clean ice is obtained.

The ice making device comprises an antibacterial water forming means for imparting at least non-volatile and antibacterial materials to water to form antibacterial water, and an ice making means for carrying the supplied antibacterial water onto an ice making surface to be frozen in layers. Ice can be formed containing less metal ions during ice making.