A long-life dust-removing water-cooled plate spark arrester, which includes an air inlet pipe, an air inlet pipe, a spark arresting chamber, a water cooling plate, a bracket, an ash bin, an inspection manhole, and an ash discharge valve. The upper part of the spark arresting chamber The air inlet pipe and the air outlet pipe are respectively connected, a water cooling plate is installed in the spark trapping chamber, a bracket is provided at the lower part of the spark trapping chamber, and the ash bin is also erected on the bracket, and the side of the ash bin is provided with Maintenance manhole, the bottom of the ash bin is equipped with an ash unloading valve, and the high-life dust removal water-cooled plate spark arrester filters the coarse particle dust containing sparks through the water-cooled plate to cool down, and the high-life dust removal water-cooled plate spark arrester It can effectively capture the smoke sparks in the flue gas produced by the industrial combustion system, thereby greatly increasing the service life of the filter bag and dust removal parts.