Interface screw fixing device between a kind of centrum Minor articulus,It is firm to install the adjacent vertebral facet joints interface of what two,It includes; One stabilizing member,With wide face and periphery leptoprosopy,And multiple coarse points,It is implanted between the side Minor articulus; And one or more screws,Penetrate the stabilizing member; Its characteristic is in what: the stabilizing member fills up the side Minor articulus clearance space with coarse point engaging,Temporary stabilization is formed,And it is equipped with multiple leptoprosopy and wide face perforation; The grade screws penetrate perforation,By centrum on this,The side stabilizing member sheet body,It is fixed in conjunction with the hypocentrum,Or it may expand and be fixed.一種椎體小關節間介面螺釘固定裝置,裝設於二相鄰脊椎小關節介面穩固,其包含;一穩定件,具有寬面及週緣窄面,及多個粗糙點,植入該側小關節間;及一或多支螺釘,穿入該穩定件;其特徵在於:該穩定件以粗糙點卡合填補該側小關節間隙空間,形成暫時穩定,及設有多個窄面與寬面穿孔;該等螺釘穿入穿孔,將該上椎體、該側穩定件片體,與該下椎體結合固定,或可膨脹卡合固定。