The main topics of biological chemistry are described in modern language: chemistry of amino acids, peptides, proteins and enzymes, carbohydrates, lipids, hormones, vitamins. Attention is paid to tissue respiration, metabolism, metabolism. Biochemistry of nutrition, blood, liver is considered in detail. The material is well illustrated, presented sequentially and available. For students of higher education institutions in medical specialties. It can be useful for undergraduates and teachers reading the course of the same name.