Abstract: Toxicity of Cadmium (Cd) metal were determined by the absorption and accumulation in bean plants. Results have been explained in relation with nitrifying bacteria and physiological process of plants. Toxicity of heavy metal Cd mainly due to the industrial wastage, medicinal pesticides, automobile exhaust which were continuously thrown in aquatic resources, causes contamination of water used for irrigation. It was observed that Cd seems to be highly toxic to the seedlings of bean plants at all concentration used and it was also harmful for the microbial life of soil. No nodule formation in the roots of bean plants were found, due to the lower population of soil bacteria, which fixes the nitrogen from the atmosphere in to the roots of plant in the form of nodules. Physiological processes of plants were effected by the absence of nitrifying bacteria, Rhizobium species. Protein and amino acid contents were found to be decreased at low concentration of Cd, but amino acid were absent at high percentage of Cd metal. Morphology of plants were also inflected by the presence of metal and color of plants turns yellow which in turns produce the effect on process of photosynthesis.