Abstract: Calcium contaning in kelamayi residue was separated into dimethylbenzene insoluble, water soluble and oil soluble calcium by filtrating and extracting the residue with dimethylbenzene and water. The residue extracted by water was separated into some fractions by column chromatography. The concentration of calcium in every fraction was determined. The results show that the content of calcium in dimethylbenzene insoluble, water soluble and oil soluble fractions are 1.6%, 61.4% and 37.0% respectively. Most of organic calcium compounds are adsorbed in alumina firmly and difficult to wash off. The quantities of residue and calcium remained in alumina increase along with the increase of water contained in alumina. The possible structure of organic calcium is heavy aromatics or compounds with carboxyl or phenolic group with strong polar.