The invention provides a method for treating sludge through combination of electroosmosis sludge advanced dewatering and incineration. The method comprises the steps that after electroosmosis, a filter cake is further subjected to push plate extrusion operation, and the filter cake with the water content lower than 35% is obtained; incineration treatment is conducted in an incinerator, sludge is fed into a primary combustion chamber, ignition combustion is conducted through an ignition temperature control combustor, the temperature reaches more than 500 DEG C, the sludge is sufficiently oxidized, pyrolyzed and combusted in the primary combustion chamber, and smoke generated after combustion enters a secondary combustion chamber to be subjected to high-temperature incineration again; smoke generated after incineration enters a cold and heat exchanger; the smoke enters a smoke treatment system along with a flue, acid removing is conducted through an acid removing device, dust removing is conducted through a bag type dust remover, and the smoke reaching the standard is exhausted to the atmosphere through a chimney. The method has the beneficial effects that an electroosmosis sludge advanced dewatering machine is utilized for reducing the water content of the sludge with the water content of 80%-96% to be below 35%, the sludge is incinerated through the incineration system, the smoke generated during incineration passes through the smoke treatment system, and the smoke is treated to reach the standard to be exhausted.