The aim of this paper is to investigate the impact of climate changes on the security of Pakistan. It also explores policies on climate change with regard to climate challenges faced by the country. It is argued that there is a number of climate related challenges including economic security, water security, food security and energy security. This research study also analyses the government policy regarding climate change. It is found in this study that due to the transfer of environment subject from the federal list to the provincial list. Provincial governments are required to take capacity-building means for handling climate change.