Plant Stress refers to external conditions that negatively affecting growth, structure and yields of plants. Stress activate a wide range of plant responses like harmonal gene expression, cellular metabolism, altered in growth level, crop productivity, etc. The experiment was performed to determine the effect of heavy metals (Cadmium, Chromium and lead) and Salt (NaCl) stress on Brassica Napus growth and development. The seeds of Brassica Napus were treated with heavy metals and salts. Heavy metals and salt stress caused reductions in growth parameters (GP, SL, RL, FW, DW, RWC, VI, RSR, SWR, RWR). It has been concluded that heavy metals and salt stress negatively affected the growth of Brassica Napus

Index Terms- Plant stress, plant response, yield, hormonal gene expression, cellular metabolism, heavy metal stress, salt stress