Rapidly solidified Bi-Sr-Ca-Cu-O (2:2:2:3) glassy ceramics was produced by gas atomization. Spherical powder less than 20μm was obtained more than 50%, and 1/3 of product was coiposed of thin fibers, which had one or two heads of round particles or had several knots. Both of powder and fiber were amorphous, the crystallization temperature was about 500°C. The 3.0nm phase appeared above 800°C, and formed plate like crystals gathering to be aggregates equivalent to primary particles. Liquid phase broke out above 860°C, and 2.4nm phase remained without forming 3.7nm phase.