This study investigates the characteristics of ternary geopolymer mortar incorporating bacteria as a self-healing agent. The research aims to develop a novel self-healing ternary geopolymer mortar using fly ash (FA), ground granulated blast furnace slag (GGBS), and metakaolin (MK) as source materials for the geopolymer binder. Bacillus subtilis, a self-healing bacteria activated by moisture, is integrated into the mix design to produce calcium carbonate for filling microcracks. The study examines the physical and chemical properties of the raw materials, mix design, and specimen preparation. Visual inspection, compressive strength testing, and scanning electron microscopy (SEM) are employed to evaluate the performance of the geopolymer mortar. Results indicate that bacteriasupplemented samples exhibit higher compressive strength and improved self-healing capabilities compared to non-bacteria samples. The research contributes to the development of sustainable construction materials with enhanced durability and reduced maintenance requirements