Gandhi's philosophy of nonviolence, or ahimsa, was central to his approach to conflict resolution. He saw nonviolence as a way of being a harmonious way of thinking, feeling, and acting that rejects exploitation and violence. His concept of satyagraha, or ‘holding firmly to truth’ involved nonviolent resistance to injustice through methods like noncooperation and civil disobedience. Gandhi believed reason and conscience could persuade opponents to change, making violence unnecessary. However, some argue Gandhi's nonviolence had limits, he allowed violence in certain cases and recognized reason alone was insufficient for social transformation. While Gandhi's nonviolence had a profound impact, a critical analysis reveals tensions and ambiguities in his philosophy. Examining these complexities can shed light on the challenges and potential of nonviolent conflict resolution today. This paper will try to analyse the Gandhi’s idea of non-violence. The views of various modern historians about Gandhi’s idea of non-violence will also be looked in. Apart from the impact, one of the important aspects of this paper is to do critical analysis of his idea of non-violence.