With the development of tourism

the built environment of ancient town possesses dual nature and presents two dimension evolvement character.Based on discrimination of the concepts of human-settlement environment and human-landscape environment

this paper analyzes the evolution track of built environment of ancient towns in China

and explores the evolvement mechanism in depth.To seutle evolving problems and conflicts

this paper suggests that the outlet relies on cooperating evolvement and harmonious intergrowth between human-settlement environment and human-landscape environment of ancient town.Then

taking the Bayu ancient town as an example

the advancing mode and tactic for the evolvement are discussed.