Physical and biological quality of seed is a very important activity when cowpea seed have to be stored for long time. The treatment of chemicals inhibitors in stores is a common practice to prevent the quality of seed. The effects of different concentrations (0, 250, 500, 1000 and 2000 ppm) sage (Salvia officinalis) and Turkish oregano (Origanum onites) on cowpea seeds in stroge. The study was arranged in factorials with 4 replications and of variance was done using statistical analysis system (SAS) software. The data collected included the rate of damaged seeds, weight loss percentage in seed, seed germination. The highest rate of damaged seeds, weight loss in seed was obtained on untreatment volatile oil. The highest seed germination was obtained on 250, 500 and 1000 ppm sage volatile oil and Turkish oregano volatile oil treatment.