A kind of vertebral body filling pressure spreader, said vertebral body filling pressure spreader has the saccule, said saccule pours into port and saccule noumenon, the said saccule is suitable for holding the curable biomaterial poured into by the said injection port, the said sacculus noumenon has openings, the size of the said opening sets up to allow the condensate of the intracapsular biomaterial of said ball to deviate from through the said opening, the said opening is sealed so as to form the Whole sacculus shape through binding material, said binding material has sintering point of predetermined temperature value in exoergic temperature range in the solidification exothermic process of the said biomaterial.