Clinicopsychological investigations of 361 patients, aged from 6 to 17 years, suffering from diseases of the gastrointestinal tract, have revealed in 60.7% of them negative psychological attitude to the dietotherapy they received. Among children and adolescents with concomitant neurotic disorders such attitude was noted in 79.6%. A system of special measures has been developed including three main elements: 1) psychotherapeutic mediation of dietotherapy before its administration and in the process of the therapy; 2) creation of the psychologic attitude to the diet adherence; 3) alteration of the patient's taste stereotype. Realization of such measures has been conducive to higher effectiveness of the dietotherapy.