This paper represented an assessment of India’s role in the Sri Lankan ethnic crisis of 1987-90s. It was critical situation in the region particular, from the security aspect. For India, there are historical relations of India with Sri Lanka. When Sri Lanka failed in the internal crisis, came a dangerous problem in front of New Delhi. Therefore, India directly involved in the landscape and did not remains isolate from the island because of their geographical continuity and ethnic affinity towards India. On the other hand, the concern of European countries and the policies adopted by Pakistan and China towards the ethnic conflict made India more active to show her intervention. India’s main motive was to find a political prospect and peace with the exchange view of Sri Lankan government which provides safety and security to the Indian ethnic groups in the country. Therefore, India supported the Tamil people and showed her sympathy towards them, but at the same time, they did not want the Tamil militant groups to do any illegal activity. The main focus of this paper is to highlight the main issues and causes of Sri Lankan ethnic conflict and role of India to settle these issues. Second point is that attempted to explore the changing bilateral relations since one decade particular, Prime Minister Narendra Modi regime.