In the present investigation twelve indigenous medicinal plants have been screened for theirantiimplantation activity in albino rats. The plant material was subjected for soxhlationsuccessively and separately from non-polar solvents to polar solvents i.e., petroleum etherbenzene and ethanol. Out of these three extracts the petroleum ether extract of seeds of Citrusmedica, aerial part of Oxalis corniculata and Tinospora cardifolia have showed maximumantiimplantation activity. Ethanol extract of leaves of Cardiospermum helicacabum, roots ofEchinops echinatus, leaves of Melia azedarach, seeds of Momordica charantia and bark of Terminaliabellirica have shown maximum antiimplantation activity amongst the three extracts of each plantmaterial screened. Though all the three extracts of seeds of Annona squamosa and leaves ofZizyphus jujube screened for antiimplantation activity, no extract has showed any loss inimplantation. The details of the results obtained are discussed.