A kinds of porous glass microsphere,FXBL,were prepared by the phase separation. The microsphere was used as the carrier for immobilizing α-amylase by the aborption,the convalent binding and the diazotization-coupling methods.And meanwhile,the three methods were compared through the effect of immobilization. So one of them,the convalent binding method,was picked out. After then,the effect of making porous glass process on immobilized α-amylase was studied .The main conclusion is followed as: Phase separation...