The luminescent and long phosphorescent properties of MAl,2,O,4,:Eu,2+,、RE,3+, (,M,=Mg, Ca, Sr, Ba;RE=Y, La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) with distorted stuffed tridymite were researched. The luminescence attributed to the 4f 5d transition of Eu,2+,. The incorporation ofRE,3+, ion into the MAl,2,O,4,:Eu,2+,system was as the auxiliary activator which provided the proper trapping levels. We could not see the luminescence ofRE,3+, though excited with the characteristic excitation wavelength of RE,3+,. We analysed the luminescent and long phosphorescent properties of this type of host codoped with rare earths, and made the conclusion that Pr, Nd, Dy, Ho, Er could effectively prolong the life time of MAl,2,O,4,:Eu,2+,system. The long phosphorescent rule is Sr,>,Ca,>,>,Ba.