The　titanium　barium　glass　microspheres　doped　with　Er2O3　were　designed　and　prepared.　The　components　of　the　glass　sample　were　25TiO(2)-27BaCO(3)-8Ba　(NO3)(2)-5ZnO(2)-10CaCO(3)-5H(3)BO(3)-10SiO(2)-7water　glass-3Er(2)O(3)　(%,　mass　fraction).　The　emission　spectra　of　titanium　barium　glass　matrix　and　the　titanium　barium　glass　microsphere　under　514　nm　excitation　were　measured　with　micro-Raman　spectrometer.　Whispering　gallery　modes　in　the　emission　spectra　from　a　31　pin　glass　microsphere　were　observed.　Many　regularly　spaced,　sharp　peaks　appeared　in　the　emission　spectra　of　the　Er2O3-doped　glass　microsphere.　The　wavelength　separation　between　the　two　adjacent　peaks　is　1.92　nm　for　the　31　mu　m　microsphere.　According　to　the　Lorenz-Mie　formula,　the　calculated　value　of　the　wavelength　separation　between　the　two　adjacent　peaks　is　1.95　nm.　The　observed　resonances　could　be　assigned　by　using　the　well-known　Lorenz-Mie　formula.