The utility model relates to a non-stirring oxidation device of a fume desulfurization serous fluid tank, in particular to an oxidation device for fume desulfurization. The lower part of the serous fluid tank is provided with round conducts, two ends of at least one diameter of the round conducts are provided with cambered conducts, the lower ends of which are communicated with the round conducts, and the upper ends extend out of the serous fluid tank to be connected with the output end of an air compressor 6 through an external connecting pipe; the internal rings of the round conducts are provided with lower air injection pipes, the lower sections of the cambered conducts present arc shapes, and the pipe walls of the cambered sections of the two cambered conducts are correspondingly provided with upper air injection pipes. The non-stirring oxidation device injects the air needed for oxidation through the air injection pipes after being compressed, to cause the serous fluid in the serous fluid tank to flow and form cyclone, thereby reaching the aim of stirring calcium sulfite, and leaves out a stirring device; in addition, utilizing the air to stir is also favorable to the full contact of oxygen and the calcium sulfite, thereby improving the desulfurization efficiency.