We research about Japanese sparkler 'senkoh-hanabi' combustion under microgravity. Present 'senkoh-hanabi' studies report only qualitative analysis. Then we develop method of quantitatively analyze about 'senkoh-hanabi'. This method can show 'senkoh-hanabi' spark distribution by integrating video image. Using this method; we clear 'senkoh-hanabi' spark distribution is symmetry around fire ball.