This article analyses actual problems of cognitive linguistics, intensively developing linguistic direction since the 80s of the XX century. The study concisely conducted a scientific and theoretical analysis of cognitivism, the object of the study of which becomes the human mind, thinking and mental processes. The formation of a concept as a basic concept of cognitive linguistics is connected with cognitive activity, world perception of a person. The concept as a result of national linguo culture reflects national, spiritual and cultural values in the linguistic picture of the world of any ethnic group. It is noted that language is a manifestation of cognitive processes, “activity of the mind” is studied on the material of language i.e. language means. The article is devoted to the analysis of ethical concepts “good” and “evil” in the language consciousness of the Kyrgyz people. It is noted that the key tokens are good and evil. The study is conducted on the material of analysis of lexical meanings of linguistic units with morphemes: zhakshy, zhaman, Kyrgyz proverb, a passage from the Epic of Manas, consisting of opposition “good” and “evil”. The article briefly describes the essence of the philosophy of good and evil of the Kyrgyz people, which reflects humanistic ideas, moral and ethical, national values, ethnic peculiarities of mentality of the Kyrgyz people. In them, good stands for love, good, success, faith, hope, honor and dignity, a sense of duty, and evil is manifested in destruction, greedy profligacy, slyness, anger, etc. The study notes that the conceptual part of the structure of concepts “good” and “evil” is “multiple and complex, as they use figurative expressions, which include purely personal perception, linguistic mentality and means of artistic expression. It has been determined that the moral and ethical concepts of “good” and “evil” are a neglected topic in Kyrgyz linguistics. They have a special place in the linguistic consciousness of the Kyrgyz people and require further in-depth study.