Abstract: It is proved by practice that subconscious reaction is an important channel for the source of cognition. As both a reaction form and a way of cognition and thinking,subconsciousness can increase the content of cognition as well as the knowledge and experience of the subject. The ways of cognition and thinking are free to form,and they can form many new ones that are not possessed by logic thinking.

Key words: subconsciousness, subject, form of cognition, way of thinking