It is significant matter for us to illuminate status of private ownership in North Korea after liberation. Such study will furnish clues approaching the origin of economic crises in contemporary North Korea. Because shrinkage of private ownership is essential characteristic of North Korean economy today. Now economic states in North Korea cause even doubts relating to the possibility of operations of private enterprises in past there. But North Korea experienced establishment of private ownership and development of private industry from liberation to the Korean War. Those cases demonstrate that the state was flexible rather than hard. Though Marxist viewpoint of private property had enormous influence on entire society, the majority of North Korean elite supported protection of private ownership and private industry for the purpose of conquest of economic crises after liberation. But attacks aiming private industry by the North Korean Worker's Party in March 1948 was too impatient in various sides. The goal of such attacks were the expansion of public properties. Public properties composed of those owned by state and consumer's cooperative society could be expanded at the sacrifice of private properties. But North Korean industrial policies were proved to be absurd because those policies caused decrease of the total product. Attacks aiming private industry by state were not demanded for the purpose of overcoming of contemporary economic crises but construction of socialistic state. That is to say, it was turning of industrial policies to prepare socialistic construction modeling experiences of Soviet Russia. North Korea's hostile attitudes against private industry and capitalists threatened even autonomous management of enterprises by industrialists. They suffered severe control and discriminative treatment by the authorities. Today serious economic crises in North Korea might have been caused from such industrial policies. Therefore this study supplies us with possibility approaching the origin of economic crises in North Korea. In addition, this study is significant in that it is focused on civil level. But the principal interest of existing studies has been concentrated on power elite of North Korea. Ultimately this study intends to illuminate dynamic sides in North Korea through examination on troubles between state and civil industrialists.