Abstract: For more than 63 years since its establishment, the Liberal Democratic Party has been deeply rooted in history and has always been at the center of Japanese politics. At any time during the ruling crisis, the party can always be transformed with the trend. According to the partys organizational classification, the transformation of LDP has experienced three phases: the elite party, the transformation of the Mass party, and the evolution of the Cartel party. In the early days of its founding, the LDP took the initiative to carry out the modernization movement to change the characteristics of elite parties. After the Cold War, in view of the decline of the Socialist Party, the LDP gave up the transition to Mass party and attempted to evolve into the Carteltype party. After Junichiro Koizumis cabinet, the LDP suffered many setbacks in the transformation of political parties and ended up returning to the local area to explore new patterns.

Key words: Liberal Democratic Party (LDP), the elite party, the mass party, the Cartel party