Cincinnati Wasson Way Corridor is a planned 1.86-mile trail expected to connect various entertainment and green facilities in the city. Significant urban environmental problems found when zooming in on the Wasson Way corridor. The proportion of urban impermeable pavement is up to 50%; The intensification of the urban heat island effect occurs in the vicinity of Crown Corridor; The disconnected waters of the site lead to habitat fragmentation, reducing the living space of organisms and resources for food access. Therefore, the mini-forest approach is designed to protect and beautify the living space by searching for the ecological marginal space.