The present invention provides an aripiprazole suspension formulation with prolonged shelf life, which is characterized in that it comprises a cellulose-based suspending agent and polyoxyethylene (20) sorbitan monooleate.本發明提供一種具有延長的保存期限的阿立哌唑可注射懸浮液製劑,其特徵在於,包含纖維素類助懸劑及聚氧乙烯(20)山梨醇酐單油酸酯。