Forster is a distinguished novelist both in modern English and world literature history, all his life his main achievements are six novels and two short story collections. His works provoke criticisms of different viewpoints, among which personal relationships and the theme of separateness, of fences and barriers are the main problems that the author always focuses on. After the author’s two visits to India, the great novel A Passage to India was produced, which continues his previous style, i.e., probing the problem of personal relationship in a more complicated situation, and my article aims at having a comparatively deeper discussion about crisis of human relationship in A Passage to India. Altogether there are certain parts in this article highlighting on the author’s philosophy the imperialism, racialism and colonization in A Passage to India. This article indicates that establishing sincere personal relationship is always Forster’s main concern. However, religious disparity, imperialism, racial prejudice and cultural conflicts turn Forster’s ideal into miserable reality; human’s isolation and separation but temptation to connect is fully demonstrated in A Passage to India.