Through review historical cognitions on relations between complexity and randomicity，bring forth and analyzing immediate relationships between randomicity and Kolmogorov complexity from computer science，this paper tries to peel off some errors understanding on this relations and to return real relations about the them，and analyzing Dell Mann effective complexity concept，argument that two relations between complexity and randomicity，and three random instances.

This paper analyzes the basic structure of scientific explanation context and indicates the six basic functions of scientific explanation context. Upon them，the essence of the method of contextual analysis and six basic principles of using these methods are discussed.

Psychiatry has the character of transdiscipline. The development of psychiatry in certain historical stage is not only determined by the level of the medical science，but also has tight relation with the dominate philosophic idea at that time. This thesis investigated the philosophic foundation of modern psychiatry from the perspective of the history of psychiatry，pointed out the dialectical interactive relation between psychiatry and philosophy.