The invention discloses an EGR (exhaust gas recirculation) exhaust purification, cooling and pressurization integrated device which comprises an electrostatic precipitation unit, a centrifugal dedusting and pressurization unit, a cooling unit and a shell, wherein the electrostatic precipitation unit is mounted on a bottom plate; the centrifugal dedusting and pressurization unit is arranged on the electrostatic precipitation unit; the cooling unit and the shell are sequentially connected outside the centrifugal dedusting and pressurization unit in a sleeving manner; an inlet port for EGR exhaust is formed in the bottom plate; and an outlet port is formed in the shell. Compared with the prior art, the EGR exhaust purification, cooling and pressurization integrated device has the beneficial effects of being novel in structural design, integrating EGR exhaust purification and dedusting, cooling and pressurization into one device, simultaneously realizing the effects of EGR exhaust purification and dedusting, cooling and pressurization and effectively improving pollution of EGR exhaust to a piping system and an engine; and in addition, cooling of EGR exhaust can increase the gas inflow of mixed gas and the quantity of EGR exhaust and can be combined with the function of EGR exhaust pressurization to meet the requirement of a high-load working condition for a large EGR rate in low-temperature combustion.