Abstract: Eucalyptus oil is natural plant oil that implies various composition. It is easy to be volatilization. And with the food, the drugs raw material not easy admixture even.The mcroporous starch adsorbs and wraps to cover up the technique making the liquid eucalyptus oil into solid powder in this study. Its’ oil content was high. The preparation technique is simple, the release is slow. It is applicable additive for solid food and drugs

Key words: Eucalyptus oil, mcroporous starch, absorbing, retarded release