The utility model relates to an ice building device, which comprises an ice attachment body, a reservoir, a water pump and a regulating valve, wherein the water pump and the regulating valve are arranged on a water pipe; one end of the water pipe is communicated into the reservoir; and the other end of the water pipe is communicated into the ice attachment body. The ice building device also comprises at least one ice box body, a condensation box body, and at least one condenser, wherein the ice box body is in bolt connection with the ice attachment body; a through hole is arranged on a part on the ice attachment body, connected with the ice box body; the condensation box body is fixedly connected with the ice attachment body; the ice box body is arranged in the condensation box body; and the condenser is placed in the condensation box body. According to the ice building device, the condenser is adopted to enable water on the ice attachment body to generate ice in the ice box body, and the ice is the same as natural ice, so that an ice scenery can be viewed and admired by people at any time, and has better visual and touch effects compared with man-made material ice.