By high performance liquid chromatography with mass detection the component composition of phenolic compounds of a new kind of medicinal plants - stolons of Cistanche salsa (C.A. Mey) G. Beck, growing in the territory of the Republic of Kazakhstan, has been studied. 10 substances of phenolic nature, with echinacoside (1097,9 mg/100g), acteoside (943,5 mg / 100g) and tubuloside B (794 mg / 100g) dominating, were identified. These compounds can be considered as a standard substance in the development of standardization parameters of stolons of Cistanche salsa.