A new medium was developed to induce high level of alpha;- amylase from Bacilluslicheniformis GMAF438149.The strain of Bacillus licheniformis was grown on the presence of different carbon , nitrogen and metal ions. The high level alpha;-amylase has been produced when potato starch and xylose were added to medium. Meat extract ,as an organic nitrogen source, had affected on enzyme yield , while inorganic sources were not found to be effective. Calcium chloride increased activity of the ...