The earthquake taking place on September 21, 1999 is the greatest disaster of 100 year record on Taiwan Proper which brought serious damage to cities and villages in the central Taiwan. For an early recovery of the traditional city culture, landscape and warm care of the displaced population, the local and central governments have musterd a great deal of man power and material in the sense of emergency to the city rehabilitation from ruin. However , a city rehabilitation differs significantly from the building reconstruction; the city rehabilitation has to be processed basing on (1)a complete damage survey record and (2)a clear definition of risk in existence which serve as the basic guidelines for a virtual rehabilitation. In the city rehabilitation, the schedule and mlestone for each sectional work should be solid and calculated and every critical point should under rigid control so as to bring the rehabilitation work on the right track. Because of lacking such a physical local experience, this essay tries to borrow the rehabilitation theory and practices of Japanese model which are best applicable to Chaotun damage survey and rehabilitation. In 1900s, the city's continued development theory and safe principles have been well developed in Europe and Japan, laying a sound foundation for city rehabilitation. The damage survey should be carried out on the spot, every piece of information relevant to damage and risk should be recorded and analyzed from which the basic guidelines and plan are based. The rehabilitation procedures begins with five phases (1)the organization of preliminary rehabilitation system; (2)the formation of basic guidelines; (3)the completion of city rehabilitation plan; (4)the preparation enterprise programs and (5)the promotion of renewed enterprises; and each phase willbe provided detailed concept and contents to be worked out to ensure that the city rehabilitation works present an integrated concept, high quality and accomplish the set goals.