A process for producing a highly purified glucosyl stevia composition, comprising the steps of: adding starch to water to form a starch suspension； adding a mixture of α-amylase and CGTase to the starch suspension and incubating for about 0.5 to 2 hours at about 75-80 ° C, resulting in a suspension of liquefied starch； inactivate α-amylase by treatment at low pH with heat； cool the suspension of liquefied starch and adjust the pH to approximately 5.5 to 7.0； adding steviol glycosides to the suspension of liquefied starch, which produces a reaction mixture； add a second batch of CGTase to the reaction mixture and incubate for about 12 to 48 hours at about 55-75 ° C. add β-amylase to the reaction mixture and incubate for about 12-24 hours at about 35-55 ° C； inactivate the enzymes in the reaction mixture by heat treatment； decolorize the reaction mixture； removing non-diterpenic compounds by contacting the decolorized reaction mixture with macroporous adsorbent resin and subsequently eluting diterpenic glycosides adsorbed with aqueous ethanol to produce an aqueous ethanol eluate containing glycosides； desalinate the aqueous ethanol eluate containing glycosides with ion exchange resins； remove ethanol from aqueous ethanol eluate, which produces an aqueous eluate； concentrate and dry the aqueous eluate to obtain the dried glucosyl stevia composition； resuspend the dried stevia glucosyl composition in aqueous ethanol to form a suspension, remove the unmodified steviol glycosides from the suspension, and separate and dry the highly purified stevia glucosyl composition； wherein the highly purified stevia glucosyl composition comprises short chain steviol glycoside derivatives having two or less α-1,4-glucosyl residues, and less than about 15% of unmodified steviol glycosides.Un proceso para producir una composición de glucosil estevia altamente purificada, que comprende los pasos de: añadir almidón a agua para formar una suspensión de almidón； añadir una mezcla de α-amilas
