A　novel　stereoscopic　snowflake-like　CoO　material　is　synthesized　via　a　simple　two-step　process,　including　the　hydrothermal　process　for　the　formation　of　the　stereoscopic　snowflake-like　Co(OH)F　as　precursor　and　thermal　conversion　process　to　CoO　without　altering　the　original　shape　of　the　precursor.　The　possible　formation　mechanism　of　the　stereoscopic　snowflake-like　morphology　of　CoO　was　investigated　by　scanning　electron　microscopy　and　X-ray　diffraction　patterns.　The　hydrothermal　temperature　and　NH4F　were　critical　to　the　formation　of　stereoscopic　snowflake-like　morphology　of　CoO.　The　supercapacitor　properties　of　as-prepared　CoO　were　investigated　by　the　electrochemical　measurements　on　a　conventional　three-electrode　system.