Abstract: The effect of organogermanium compound on the Ehrlich ascites tumor was investigated. The solid tumor was obviosly inhibited by the organogermanium compound; The effect depended on doses of the drug, in which 10mg/per mouce wasvery optimal. The dose yielded the inhibitory rate may up to 93.42%, whereas thatdoses at 20mg/per mouse and 5mg/per mouse were 74.74% and -79.49% respecti-vely. The effect of organogermanium compound on the ascites tumor only responedduring the administering period; The effect had been lost as soon as the dg hadstopped.