Abstract: The ecological conversion and effect of urbanization on growth of plants based on the data from two function areas, the Cherry Gully Sight-seeing area and the area of the Capital Steel industry are studied in this paper. The results showed that there are great differences in air temperature, relative humidity. precipitation and the contents of pollutants in rain, dust and plants between the two function areas. The blomingand fruit-bearing period of most plants in industrial area are earlier but the leaf changing-color period is later than those in Sight-seeing area. Some plants couldn’t even blossom and bear fruit. Although some plants could blossom but the flowers were less in number and their fruits were smaller. The leaf surface area of nine broad leaf’ trees and shrubs and the yearly twig growth rate of four evergreen needle leaf trees growing in Sight Seeing area were 0.5—l times as big as those in industrial area.