In the late Nineteenth century, with the practice of the classical Liberalism, the dilemma of Liberalism in reality occurred. The laissez-faire principle which focuses on individual freedom seemed to conflict with the interest of the whole society. Therefore, thinkers attempted to explore the ideal relationship between individuality and collectivity, and Thomas Hill Green (1836-1882) was the representative scholar among these thinkers. This thesis aims to analyze the coherence of Green's philosophical thoughts and social policies, and discuss to the historical context of Green's thoughts. By doing so, this thesis tries to present the trend of transformation of Liberalism in the late 19th century.