Processing apparatus for protecting oxidation and processing method using it

The present invention relates to a processing apparatus enabling the prevention of oxidation and a processing method using the same, wherein the processing apparatus comprises: a chamber into which a material is put from the outside; a vacuum formation unit for vacuumizing the chamber; a nitrogen input unit for putting nitrogen into the chamber; and a processing unit for processing the input material. Therefore, when the input material is processed, the contact of the input material with air can be minimized, thereby preventing the deterioration of product quality due to browning or oxidation of the processed material.