The invention relates to a control method for surface protecting and rapid cooling of a hot rolled moderate-thickness sheet. The control method comprises the following steps of firstly performing hot rolling on sheet materials, and discharging the sheet materials from a roller way of a hot rolling mill through utilizing a high-temperature-resistant rubber sucking disk, wherein a shield is arranged on the high-temperature-resistant rubber sucking disk; then stacking the discharged sheet materials, performing temperature reduction treatment on the stacked sheet materials; during temperature reduction treatment, arranging a separator between each upper sheet material and a corresponding adjacent lower sheet material, so that an air channel is formed between every two adjacent sheet materials by the corresponding separator; and then performing forced cooling on the stacked sheet materials by a blowing machine; and after the sheet materials are cooled to room temperature, recovering the separators. Through the adoption of the structure, good ventilation effect between sheet material layers can be guaranteed; an air current passes through the sheets to take heat quantity away, so that the cooling time of the sheet materials is greatly shortened, and 50% or above of cooling time can be saved; the forced cooling cycle of the blowing machine is shortened; the turnover of metal is accelerated; the energy consumption is saved; and the production efficiency is effectively improved.