Abstract: As a new subject of 20 century, urban forestry has been recognized all over the world,and lots of achievement have been obtained. Alonging with the fasten of urbanlization in the 21st century, urban forest is becoming an important subsystem of urban, and will be more adaptable to the urban development in zone control, dominant function, management. Urban forestry will be an important guarantee for the urban sustainable development. In this paper, 5 uptrend of the urban forestry in new century were discussed, they were (1)zone extending, radiating the suburban and village; (2)seeking the natural style of the distribution and structure of the urban forestry, towards the perfect amalgamation between the urban and forestry; (3)paying attention to combination of forest and water system, exerting the water system value in improvement urban environment; (4)emphasizing human's feeling, satisfing the healthiness of citizen;(5) re-figure urban civilization, subliming nationality forest culture.