Cold plasma treatment is widely used for activation and decontamination of surfaces. Owing to the unique plasma features this technique is applicable for modification of a wide range of thermally sensitive materials including biological tissues. Recently it has been applied successfully for treatment of plant seeds. In this paper releaved the comparison between untreated and plasma treated seeds of Vigna unguiculata L. , Cajanus cajan L.Pisum sativum L.in the different proportion of contaminated soil. In-vitro condition was used to find different morphological parameter of the plants. The plasma treated seeds shows excellent result than the untreated seeds.