Sludge low-temperature drying equipment can directly dry sewage or sludge with a moisture content of less than 83% to dry sludge with a moisture content of 10% -30%, reduce the amount by up to 90%, and effectively sterilize up to 90%. Low energy consumption, no pollution, widely used in municipal sludge and industrial sludge (printing and dyeing, paper making, electroplating, chemical, leather, pharmaceutical, etc.) drying reduction, 10% —30% moisture content