The research attempts to study new product development team’s (NPD) conflict, innovation and team performance. The cross-functional team is currently widely used to solve the NPT process in many companies. Team developing effectiveness of NPD team is considered to be related to innovation and team performance. NPD is very a complicated process because conflict may occur within the team conducting its project task. By examining 106 NPD team members from a Taiwan’s high-tech manufacturer, we have found that (1)team developing effectiveness is ositively correlated to team innovation and team performance, (2) task conflict is found to be contributed to team innovation and team performance, and (3) the relationship between affective conflict and team innovation and performance is not found.