Research on knowledge problem from the perspective of economics is embedded in the whole development of the mod-ern economics. From the evolutional point of view of economic theory,classical economics grew the thinking of “the division ofknowledge”,and Neo-classical economics implies “knowledge”,innovation theory studied the concept of “knowledge”,New In-stitutional Economics thought knowledge is important,then evolutional economic deeply thought the concept of “knowledge”,todayknowledge-based economy newly interpret the concept of “knowledge”.