To date, eating disorders (anorexia nervosa, bulimia) have become widespread among the population. Alexithymia is considered to be one of the main features of patients with an eating disorder. In this regard, the purpose of this study was to identify and register the components of alexithymia in patients with an eating disorder, conceptually reflecting the features of this phenomenon. The research methods included: the Toronto Alexithymic Scale (TAS-20), the Lyusin Emotional Intelligence Test, the Karpov Reflexivity Questionnaire, the Giessen Questionnaire of Somatic Complaints (GBB), the Method «Identification of essential features». The methods of data processing and analysis were carried out using the IBM SPSS Statistics 26 program, which used the Spearman rank correlation coefficient and the Mann-Whitney U-criterion. As a result, it was revealed that patients with an eating disorder are characterized by a general deficiency of emotional regulation, which reflects the inability to identify, understand and describe emotions. At the same time, patients diagnosed with anorexia nervosa demonstrated a reduced ability to reflect, and were also characterized by a predominance of a specific situational style of thinking over an abstract logical one. The revealed features of the phenomenon of alexithymia in patients with an eating disorder can later be used in an integrated approach to the preparation and implementation of psychotherapeutic interventions, thereby increasing the effectiveness of therapeutic measures.