Disclosed herein is an injection apparatus (1) and control method thereof. The apparatus comprises a nozzle (21) to guide a raw material to flow into an injection mold (70), a microwave transmission part positioned at a portion of the nozzle (21), and a microwave generation part (50) positioned near the nozzle (21) to generate and irradiate microwaves to the microwave transmission part. With this structure, vulcanization of the raw material injected into the injection mold (70) occurs uniformly and rapidly within the injection mold (70), thereby improving a quality of an injection molded product while increasing a speed of injection operation.