Abstract: Thomas Kuhn objected accumulative and whig-history research about Science.He urged an organic combination of history of science and philosophy of science,and of intra-history and extra-history.This is very profound.But his toolism truth viewpoint induces him into a mire of truth epistemology.A research into Kuhn's viewpoint about history of science shows great significance to current research on basic theories on history of science and philosophy of science.