Object The invention has for its object to provide an oil catch apparatus that is capable of extracting a sufficient amount of oil albeit being of compact size. Embodiment As shown in Fig. 4 , the oil catch apparatus 1 comprises a filter 7 that includes a cylindrically wound main filter unit 71 and a keep member 72 for keeping both ends of the main filter unit 71. An air flowing into the main filter unit 71 is cleared of impurities upon passing through the main filter unit 71, and exits out of the main filter unit 71.