Industrial revolution plays a vital role on country’s development at the same time the pollution created by these industries has high impact on change in climatic conditions of the Environment. Climate has a strong influence on biological processes and thus exerts direct control on the distribution, abundance, and interactions of the biota. Indirect effects arise from human activity in response to climate change. As a result, the biodiversity status of India will almost certainly change in response to climate in the course of the present century. In the present study the influence of climatic changes on the biodiversity of grasshoppers of Amirdhi forest and adjoining cultivable lands of Vellore were analyzed for six months (October 2013 to March 2014) in three different stations. The result shows that the climatic changes and availability of food sources in the environment has influenced the biodiversity of grasshopper population.