The invention discloses a nitrogen deoxygenization and aeration device special for a converter station. The nitrogen deoxygenization and aeration device includes an aeration main cavity. The aerationmain cavity is provided with a nitrogen inlet and a plurality of nitrogen outlets. The nitrogen inlet and the multiple nitrogen outlets communicate with an inner cavity of the aeration main cavity, the aeration main cavity is further provided with a gas guiding pipe, one end of the gas guiding pipe is in communication with the inner cavity of the aeration main cavity, and a pipe outlet is formed in the other end of the gas guiding pipe. According to the nitrogen deoxygenization and aeration device, the contact between nitrogen and the unit volume of an aqueous solution is more sufficient, thenitrogen content in the aqueous solution is increased, the oxygen content in the aqueous solution is reduced, the nitrogen deoxygenization efficiency is truly improved, and the problem that the dissolved oxygen content of cold water in a valve cooling system of the converter station is too high is effectively solved.