Abstract Since ancient times, In traditional medicine has been widely used for Tan medicine, which make to natural raw material. Nowadays, this practice has been renewed, and researches are being conducted to determine their chemical component, mineral content and to explain their activating mechanism. Compounds with antioxidant activity contained in the pharmaceutical raw materials has very important benefits for metabolism, organ system function and to inhibit inflammation, oxidation reaction. In Mongolian traditional medical sources literature noted that bark (Larix sibirica Ldb) has activity such as anticoagulant, anti-cancer, anti-flu and to decrease arterial hypertension and also it was included to composition of "Tanchin-25" reception. Spectrometry and Rentgen fluorescence spectroscopy were used to identify chemical composition and content of mineral in the sample of Larix bark (Larix sibirica Ldb). According to the exploration, content of total flavonoid were determined 0.773%, and by mineral test, essential macro and micro elements that were obtained Ca (18.74%), Mg (8.31%), P (13.29%), K (2.49%), Na (0.675%), Cu-(375ppm), Zn(715ppm), Cr (68ppm) and V (17ppm), Co (5ppm).

Abstract: Mongolian traditional medicine has history of 5000 years and has been used medicinal plants, medicinal animal products, and minerals for prevention, treatment, more energy or strength. The woody parts, resins-colophony, and bark of the Siberian larch, belonging to the genus Pinaceae, are used in traditional medicine as a medicinal raw material. This paper purposed to reviews the chemical composition and pharmacological research of Siberian larch, a natural medicinal raw material that occupies 60.4% of Mongolia’s natural forest area and 78.7% of its reserves, and its use in Western and Oriental medicine. Method: The study of the chemical composition of Siberian larch, pharmacological research, and its use in Western and Eastern medicine was judged on the basis of sources, scientific articles, and textbooks. Result Alkaloids, flavonoids, various essential oils, polysaccharides, sesquiterpenes in the upper part of the Siberian larch, flavonoids such as quercetin, taxifolin, kempferol in Siberian larch wood, abietic acid in the solid part of Siberian larch resin, Siberian larch bark contains tannins (10-15%), lignin (46-47%) and polyphenols (38-39%). The woody part of the Siberian larch tree has antiviral activity against Herpes Simplex, high antioxidant properties, and is used to prevent and treat allergic diseases. The flavonoids in larch resin reduce the risk of cardiovascular disease and cancer. Larch bark inhibits E.coli bacteria.