Diagnostic agent or kit for the prognosis of neuroblastoma is used to diagnose the prognosis of neuroblastoma (particularly, classifying its progress and determining stage 4s neuroblastoma), which agent or kit comprising a nucleic acid probe, nucleic acid primers, or a nucleic acid microarray utilizing a nucleic acid comprising one sequence selected from the group consisting of nucleic acids set forth in SEQ ID NO:1 to SEQ ID NO:174, a fragment thereof, or a combination of either or both.