The relationship between Thailand and India during 1950-1986 is considered as an important period in the history of these two countries. Their reciprocal relationsin various fields have developed progressively. The author is interested in 1) focusing on the relationship between Thailand and India 1950-1986 and 2)using the results of the research as a basis to suggest ways of improving the relationship in the future. The study shows that the relations between Thailand and India may often be influenced by the impact from international and regional events. Moreover, on the national level, the policy of both countries also plays an important role in the relationship in political,economic and social aspects.