Abstract: The relationship between intrinsic and extrinsic motivation has taken much attention for a long time. The authors outlined the development of the experimental studies，and suggested that the conflict conclusions resulted from the different standpoints owned by different researchers. Based on the review of various theories on the topic，especially the new trend of the self-determination theory，the authors believe that the concept of psychological needs may help to solve much more problems than other theories，and will realize the integration of intrinsic and extrinsic motivation at a higher level. The article proposed further studies

Key words: intrinsic motivation, extrinsic motivation, self-determination, organismic dialectical metatheory, needs