||Ceropegia bulbosa is a medicinal herb, this is useful in curing many disease like kidney stone and deafness. Ethno botanical study showed that the plant has good medicinal value for tribe of Rajasthan The preliminary phytochemical studies of Ceropegia bulbosa tuber and leaf extracts revealed the presence of steroids, glycosides, flavonoids alkaloids, saponins, tannins, terpenoids and potassium salt. Gas chromatography mass spectroscopic investigation of methanolic extract of Ceropegia bulbosa – a annual land plant is investigated by GCMS technique while the mass spectra of the compounds found in the extract are matched with the standard library of NIST. Maximum % area are found for 2H-Azepin-2-one, 3-(dimethylamino) hexahydro is present in maximum amount (9.09.%) with RT=8.913min, followed by 9,12,15-Octadecatrienoic acid, methyl ester, (Z,Z,Z) (8.16% )with RT=16.165min in the methanolic extract of leaves of C.bulbosa. 2H-Azepin-2-one, 3-(dimethylamino)hexahydro is present in maximum amount (43.58%) with RT=8.955min, followed by 2-Amino-9-(3,4-Dihydroxy-5-Hydroxymethyl-(16.08%) with RT=9.543min in the methanolic extract of tuber of C.bulbosa.