Rhizobacteri indigenous Merapi isolates have been detected, and MA, MB, and MD isolate could withstand osmotic stress up to >2.75 M NaCl. MD isolate was stronger in dissolving Phospate than MA and MB isolate, but MA and MB isolate had much stronger Nitrification capability and could perform ammonification than MD isolate. This research studied about Rhizobacteri Indigenous Merapi isolate as identification, as well as characterization. Results show that there is a difference in colonial characteristic of four Rhizobacteri indigenous Merapi isolate where MB and MC isolate (white Circular-Entire shape), except for MA isolate (Curled-white with Undulate edge) and MC isolate (Ramose-yellow with Filamentous edge) and also that MD isolate have the biggest diameter (1,5 mm). Cell characteristics, however, were the same, gramnegative and were rod shaped, except for MD isolate (coccus). All showed aerob and fermentative characteristic, although MD isolate very strongly hydrolyze starchs. The growth type is fast growing which reach log phase for 48 hours and then the number of colony decrease.