As　a　polymer-like　organic　material,　asphalt　often　undergoes　aging　during　service　life.　Regeneration　technology　is　the　main　approach　to　achieve　its　recycling;　therefore,　the　rejuvenator　is　an　important　factor　affecting　the　regeneration　effect.　In　order　to　evaluate　the　rejuvenation　effects　of　rejuvenators　on　aged　asphalt,　fluid　catalytic　cracking　(FCC)　slurry　and　a　penetrant　containing　epoxy　functional　groups　were　used　to　prepare　conventional　rejuvenators　(CR1　and　CR2)　and　a　penetrable　rejuvenator　(PR).　The　impact　of　the　penetrant　on　the　physical　properties　of　the　rejuvenator　was　investigated,　and　the　rejuvenation　effects　of　different　rejuvenators　on　mild　and　severe　aged　asphalt　were　evaluated　through　physical　and　rheological　tests.　Results　show　that　the　penetrant　effectively　lubricates　the　movement　of　rejuvenator　molecules,　improving　the　high　temperature　stability　and　aging　resistance　of　the　rejuvenator.　CR1　and　CR2　are　more　suitable　for　mild　aged　asphalt,　as　mild　aging　has　a　relatively　minimal　effect　on　the　chemical　composition　and　colloidal　structure　of　asphalt.　At　a　25%　dosage,　the　PR　significantly　restores　the　physical　properties　of　severe　aged　asphalt,　while　CR1　and　CR2　still　fail　to　meet　specifications.　The　PR　is　more　effective　for　severe　aged　asphalt　because　it　not　only　dissolves　and　disperses　asphaltenes　but　also　weakens　interactions　between　asphaltenes,　which　facilitates　a　more　effective　restoration　of　the　colloidal　structure　and　significantly　enhances　the　rejuvenation　effect.　The　findings　of　this　study　provide　insights　into　the　design　of　penetrable　rejuvenators　for　a　more　efficient　utilization　of　reclaimed　asphalt　pavement　(RAP).