Thi s arti cle descri bes the hi story of the formati on of compound sentences and the theoreti cal and practi cal works of domesti c sci enti sts on compound sentences. The sci enti fi c and theoreti cal substanti ati on of the arti cle i s based on the works of A.Bai tursynov, S.Amanzholov, N.T. Sauranbaev. The formati on of composi te sentences are the result of labor for several centuri es. The arti cle descri bes the changes that have occurred over many years, from the very begi nni ng of the emergence of a compound sentense to the present. The arti cle also exami ned the si mi lari ti es and di fferences of compound sentences i n the opi ni on of our domesti c sci enti sts. Among sci enti sts, i t i s worth noti ng the work of N. Sauranbaev, who made a great contri buti on to the study of composi te sentences. The arti cle was wri tten based on the concept of a sci enti st. The arti cle also descri bes the changes i n the hi story of the compound sentencesand consi ders the changes and addi ti ons to the knowledge of the language.