Abstract: The existence of uncertainty and complexity makes the management of innovation projects a tough work. This article analyzes four types of uncertainty: deviation, foreseeable uncertainty, unforeseeable uncertainty, and chaos; discusses the management methods accordingly. Combined uncertainty with complexity, the innovation projects could be managed by two methods: learning and selectionism. Through cased study, we analyze how to use all these methods in different kinds of projects and in different stages of the projects.

Key words: innovation, uncertainty, complexity, learning, selectionism