The present study was undertaken to evaluate the antimicrobial, antioxidant and anthelmintic activities of the plant Rhynchosia pseudo-cajan Cambess. The crude extracts of powdered plant material were obtained in various polar and nonpolar solvents, viz: petroleum ether, chloroform, methanol and distilled water. Well defined zones of inhibition were recorded indicating that the plants were potent against pathogenic microbes, such as i.e., Staphylococcus aureus, S. saprophyticus, Escherichia coli and Pseudomonas aeruginosa, Aspergillus parasiticus and Rhizopus oryzae. The antioxidant activity of all the plant extracts was studied by DPPH Assay, Total Antioxidant Assay and Total phenolic Assay and the remarkable values comparable with the standard antioxidants were recorded. The in vitro anthelmintic activity of these plant extracts was found much stronger than the standard medicine, like Levamisole. Therefore, these plants can be declared as the possible source of antimicrobial, antidiabetic, antioxidant and anthelmintic agents to treat the ailments of man and his domestic animals like sheep, goat etc.