Automatic ash unloading program, which determines whether it is necessary to unload ash based on the operating time of the dust collector. After starting to unload ash, it determines whether the current warehouse has completed the ash unloading based on the pressure of the unloading pipeline. Each warehouse unloads ash in sequence; Added differential pressure mode in the ash cleaning section; Many alarms have been added, such as the alarm for the duration of ash discharge, the alarm for the high and low pressure of the ash discharge pipeline, and the alarm for the injection pressure of a single dust collector. It has now been put into use, effectively reducing adverse situations such as pipeline blockage, bag rupture, and large leakage of dust removal ash caused by delayed observation by personnel or equipment failure.