The different plants of Filipendula genus are sources of essential oil and are used in scientific or folk medicine very often. As a result of conducted research, it was established that the component composition of essentially oil are methylsalycylate and salicylic aldehyde and mono- and sesquiterpenes mainly. At the same time the quantitative content of separate components of essential oil were significantly differed. Further the means of data clustering have been applied which allowed to analyze the set of all experimental data simultaneously. Analysis of built hierarchical tree showed the researched plants can be integrated into 3 groups in accordance with degree of difference: 1 - F. camtschatica, F. glaberrima, F. palmata; 2 - F. ulmaria, F. denudata, F.picbaueri; 3 - F. vulgaris. Such distribution corresponds to taxonomy positions of these spesies of Filipendula genus. Thus, the proposed approach to analysis of the components composition of essential oil can be used as an additional sign in solving taxonomy tasks for dividing various species. Besides the cluster analysis of component composition of essential oils can be as a methodical basis of implementation of technology a "fingerprint" technology, which can be used for identification of not qualitative herb raw materials containing other plants.The different plants of Filipendula genus are sources of essential oil and are used in scientific or folk medicine very often. As a result of conducted research, it was established that the component composition of essentially oil are methylsalycylate and salicylic aldehyde and mono- and sesquiterpenes mainly. At the same time the quantitative content of separate components of essential oil were significantly differed. Further the means of data clustering have been applied which allowed to analyze the set of all experimental data simultaneously. Analysis of built hierarchical tree showed the researched plants can be integrated into 3 groups in accordance with degree of difference: 1 - F. camtschatica, F. glaberrima, F. palmata; 2 - F. ulmaria, F. denudata, F.picbaueri; 3 - F. vulgaris. Such distribution corresponds to taxonomy positions of these spesies of Filipendula genus. Thus, the proposed approach to analysis of the components composition of essential oil can be used as an additional sign in solving taxonomy tasks for dividing various species. Besides the cluster analysis of component composition of essential oils can be as a methodical basis of implementation of technology a "fingerprint" technology, which can be used for identification of not qualitative herb raw materials containing other plants