The invention relates to an integrated wet-type electric precipitator insulation device which comprises a left cross beam, a right cross beam, an upper seal shell, a lower seal shell, a left seal shell, a right seal shell, an inspection manhole, a seal air port, a high pressure introduction port, an anode component limiting device, a base and an insulator, wherein the components are assembled to form a hollow box type structure; the insulator and the base thereof are mounted in the internal bottom of the lower seal shell; the inspection manhole, the high pressure introduction port and the seal air port are arranged at the top of the upper seal shell; the anode component limiting device is mounted on the outer side of the right cross beam. The integrated wet-type electric precipitator insulation device has the beneficial effects of excellent leakproofness, high equipment safety and installation accuracy and easiness in quality control; the integrated device ensures self rigidity and strength and construction safety.