The invention discloses a high-temperature soot water bath dedusting system, comprising: a cyclone dust collector, which includes a cylinder body, a cone body and an ash hopper arranged from top to bottom, the side wall of the cylinder body is provided with a soot inlet, a top A soot outlet is provided, and the outer wall of the cone is provided with a first water pipe; an acid removal tower, an alkali removal tower; a drying tower. The present invention can effectively remove micron-level solid dust (such as sand dust, coal dust), viscous liquid micro-clusters (such as oil fume, haze), and soluble gases (such as hydrogen sulfide, nitrogen oxides, hydrogen chloride, etc.) in soot, Fully exchange the heat of the high-temperature soot itself, maximize the use of the heat energy of the high-temperature soot, achieve a good dust removal effect, and dry the gas after dust removal, saving resources and being environmentally friendly.