A electrophoretic study on seveal important enzymes was conducted with seed, leaf and stem of Benincasa hipida (Thumb) Cogn and Commelina communis L. Isozyme patterns of esterase were different from the parts and fruit of wax gourd appeared only one band. In the peroxidase isozyme, fruit of wax gourd appeared four bands, but stem of common dayflower no appeared. In the amylase isozyme, seed and fruit of gourd were appeared nearly one band, respectively.