Obtain the object of the present invention is to provide bone cement compositions and with what the bone cement compositions kit of bone cement compositions and the manufacturing method of bone cement solidified body, bone cement compositions time, i.e. dough time needed for reaching the state for being able to carry out good processing operation is short, as a result, until the time needed for starting to process operation shortens, it is hereby achieved that high operating efficiency. The characteristic of bone cement compositions of the invention is in what, it contains (methyl) acrylic ester polymer large-size particles that average grain diameter is 10~60 μm, (methyl) the acrylic ester polymer small size particle for being 0.1~2.0 μm with average grain diameter, (methyl) acrylate monomer, and polymerization initiator, wherein, the containing ratio of (methyl) the acrylic ester polymer small size particle is 5~30 mass % with respect to the total amount that is somebody's turn to do (methyl) acrylic ester polymer small size particle and (methyl) acrylic ester polymer large-size particles.本發明的目的是提供骨水泥組合物和用於得到骨水泥組合物的骨水泥組合物試劑盒及骨水泥固化體的製造方法，該骨水泥組合物直至達到能夠進行良好的處理作業的狀態所需的時間、即麵團時間短，結果，直至開始處理作業所需的時間變短，從而可以獲得高作業效率。本發明的骨水泥組合物的特徵在於，其含有平均粒徑爲10～60μm的(甲基)丙烯酸酯系聚合物大粒徑顆粒、和平均粒徑爲0.1～2.0μm的(甲基)丙烯酸酯系聚合物小粒徑顆粒、和(甲基)丙烯酸酯系單體、和聚合引發劑，其中，所述(甲基)丙烯酸酯系聚合物小粒徑顆粒的含有比率相對於該(甲基)丙烯酸酯系聚合物小粒徑顆粒與(甲基)丙烯酸酯系聚合物大粒徑顆粒的總量爲5～30質量％。
