The　utilization　of　waste　rubber　as　aggregates　shows　both　environmentally　friendly　features　and　high　costefficiency　in　construction,　but　may　cause　poor　workability　such　as　rubber　flotation　and　agglomeration.　To　address　the　above　issues,　the　pelletization　method　was　adopted　to　produce　rubberized　artificial　geopolymer　aggregates　(R-GPA),　and　the　effects　of　different　rubber　modification　methods　and　rubber　contents　were　investigated　through　pelletization　technologies,　mechanical　tests,　X-ray　computed　tomography　(XCT)　and　backscattered　electron　with　energy-dispersive　spectroscopy　(BSE-EDS).　Results　showed　that　the　combined　modification　with　NaOH　solution　and　silane　coupling　agent　presented　the　most　effective　surface　modification　efficiency.　According　to　microscopic　analysis,　rubber　modification　could　effectively　enhance　the　rubber-matrix　interface.　The　produced　R-GPA　could　thus　possess　an　oven-dried　particle　density　within　1500-1800　kg/m3,　a　water　absorption　of　7%-10.5%,　and　a　pelletization　efficiency　over　98%,　which　provided　a　new　insight　into　the　value-added　utilization　of　waste　rubber　and　the　promotion　of　artificial　aggregate　technologies.