The invention discloses a shelled Artermia cysts cooling device and method. The shelled Artermia cysts cooling device comprises a container with side walls and a bottom, and a support supporting the container, the side walls and the bottom form a containing cavity of the container, the bottom is funnel-shaped, a water incoming pipe and a discharging pipe which are communicated with the containing cavity are arranged on the bottom, a water incoming control portion is formed on the water incoming pipe, a discharging control portion is formed on the discharging pipe, a plurality of overflow ports are formed in each side wall, and a screen is arranged on each overflow port. By applying the shelled Artermia cysts cooling device and method, the problems of low cooling speed, nonuniformity in cooling and inconvenience in operation when the prior art is used to cool shelled Artermia cysts can be solved.