Abstract: Based on the LID theory , this paper expounds the functions of rainwater infiltration and rainwa-ter storage of sunken green belts, permeable pavements and ecological tree pools, and points out that thedesign of these areas in municipal road should be combined with site conditions to calculate rainwater stor-age and infiltration, and check the total runoff control scale and runoff pollution control. Through the caseanalysis , it provides theoretical basis for the application of sunken green belts in municipal road design.

Key words:  LID theory;municipal roads, sponge city