According to the characteristics of cooling tower such as the low gravity centre, small height- slenderness ratio and thin wall, the main parameters of blasting were designed including the cut' s shape, height，and angle. A large diameter aril hyperlbolic reinforced concrete cooling towere demolished by the way of hole-opening, steelbar-breaking and staff-reserving. The safety analysis of the flying stones from the blasting, vibration of the collapse blasting, and splashing of the crushed slag etc were conducted, and specific security measures were made. The result showed that the cooling tower collapsed in the de- signed direction after blasting,which provided reference for similar engineering design.