Marx and Engels didn't make a systematic exposition about geopolitical theory, and never proposed the concept of 'geopolitics', but it does not mean that there was not geopolitical thought in their theory system. In fact, there are a large number of geopolitical discussions in their works. It had great theoretical and practical significance to research geopolitics and Marx's theory by study these thoughts of Marx and Engels. This paper will focus on three major aspects: the judgement of geopolitical pattern, the analysis of relationship between land power and...