The SFC4×6 push rod cooling machine has problems such as high failure rate, poor extreme cooling effect, low heat recovery efficiency, and high power consumption. Therefore, the fourth generation walking beam with intermediate roller crusher grate cooler of Tianjin Cement Institute is adopted for replacement and transformation. The walking grate cooler with intermediate rollers adopts a fixed slope grate plate with the Coenda effect, and the horizontal movable grate bed is designed based on the walking principle. The grate bed rows are equipped with gas sealing devices and dust sealing devices, and there is no material leakage in the grate bed. The central roller crusher can crush red and large materials to a particle size of  below 25mm, with good secondary cooling effect. After the renovation, the clinker temperature of the cooler was stabilized below 100 ℃, the heat recovery efficiency of the cooler was increased from 54% to 78%, the secondary air temperature was stabilized between 1 150℃ and 1 200℃, the power generation was increased to 29~30kW·h/t, and the equipment operation rate was improved, achieving the expected renovation goals.