The invention provides a ventilation cooling crystallization tower. Air is adopted as the coolant by the tower, cooling and crystallization of the solution are ended by contact and heat exchange through the mixing of air directly with a solution, the tower comprises tower equipment, an air blower and circulation pump equipment; a demister, a liquid distributor, a filling layer, a guide cone and a guide tube are arranged in the tower equipment; the function of the demister is for removing liquid drops entrained by air, reducing material losses and protecting the environment; spiral nozzles are adopted by the liquid distributor, the liquid distributing effect is good, and blocking is not easily incurred, the function of the filling layer is for improving the contact area of air and the solution, and improving the cooling effect; the function of the guide cone and the guide tube is for improving the crystallization effect and preventing the crystallization and hardening. The ventilation cooling crystallization tower is significant in improving the cooling and crystallization effect, significant in reducing energy consumption, and has the advantages of being large in production capacity, environmentally friendly and pollution-free, simple in operation and the like.