THIS THESIS IS TO DISCUSS THE TRANSITION OF THE URBAN CORRELATED PLANS OF TAIWAN BY FOCUSING ON THE SYSTEMATIZATION OF THE PLANS ON THREE LEVELS， WHICH IS FURTHER DEVIDED INTO THE FOLLOWING SIX PERIODS. (1)1895-1945:THE URBAN PLANNING PRACTICED IN EACH CITY DURING JAPANESE OCCUPATION PERIOD. (2)1945-1964:THE JAPANESE URBAN PLANNING LAW CONTINUALLY APPLIED AFTER TAIWAN RECOVERY. (3)1964-1973:THE REGIONAL PLANNING BEING LEGALIZED. (4)1973-1979:THE DECLARATION OF THE REGIONAL PLANNING LAW. (5)1979-1987:THE ESTABLISHMENT OF THE PLANNING SYSTEM REGARDING THE THREE LEVELS. (6)1987〜:THE PREFECTURE-CITY COMPREHENSIVE EXPANSION PLANNING AND METROPOLITAN PLANNING BECOMING HIGHER IN RANK THAN REGIONAL PLANNING.