Normal people’s thinking is under their own subjective control, while some schizophrenic patients feel that their thinking is not under their control, or experience that their thinking no longer belongs to them, but is controlled by an external force. It means that the patient feels that his or her thinking does not belong to him or her, that the thinking activity has lost its autonomy, or that it is controlled by an external force. Examples include the experience of thought deprivation, thought insertion, and thought broadcasting. Thought insertion, thought deprivation, and thought seeding are common in the early stages of schizophrenia and in the fully developed stage of symptoms. Thoughts are indirect and generalized reflections of the human brain on objective things. This means that the thinking process is mediated using known knowledge and does not depend on actual objects. At the same time, it reflects the nature of things and the internal connections between them. The thinking process includes the basic processes of analysis, synthesis, comparison, abstraction, generalization, judgment and reasoning through associative and logical processes. Analysis refers to distinguishing the characteristics of things; synthesis refers to linking the characteristics of things into a whole; comparison refers to comparing one thing with other things and determining their similarities and differences; generalization refers to extracting the common characteristics of a class of things and discarding their individual characteristics. Thinking is carried out by forming concepts with the help of words. Determining the relationship between this concept and another is the process of judgment. To make new judgments on the basis of existing judgments is the process of reasoning. Thinking is a function of the human brain, which in turn is governed by the individual’s previous experience. The social and cultural context of the constraints. Therefore, the functional state of the human brain. The individual’s psychological state (needs, motivation, emotions, personality, etc.) and socio-cultural background can influence the thinking process.