Abstract: The interrelation of urban morphology fractal and road network fractal is seldom studied,but both have influence on each other and form a L-T hypercycle system.The consistent evolution between urban morphology dimension and road network dimension are proposed and the coordinate gene conception and model put forward for evaluating the matching relationship between them.Finally Chengdu city was taken as an example to analyse its the evolution process of urban morphology and road network.The actual status is w...