About 4,000 species of angiosperm plants are parasites and dependent on other plants to absorb water and soluble compound. Broomrapes are a group of these parasite plants belonging to the Orobanchaceae family. The Broomrapes (Orobanche spp.)are obligate parasites that infect the roots of dicotyledonous plants. The genus Orobanche has more than 150 species in the world and 36 species in Iran, of which only a few species of them are crop parasite. Orobanche plants are important especially in southern and Eastern Europe, the Middle East and North Africa. These plants are very different in terms of hosting domain. Some of them parasite a wide range of products, while others are more specific. In this research, samples of this parasite were found in young oak groups in Zagros areas. After identification, the oak host species and parasite species were identified to Quercus infectoria Oliv. and Orobanche aegyptiaca Pers. respectively. Quercus infectoria Olive oak species is one of the few number oak species in the forest areas of Zagros, which is also known as darmazoo in persian, and oak seedlings Parasite of Orobanche aegyptiaca Pers. is famous to Egyptian Broomrapes and have two synonymous of Phelipanche aegyptiaca (Pers.) Pomel and Phelipaea aegyptica Walp.too. This Broomrape plant parasites wide ranges of herbs, including important crops such as tomatoes, melons and legumes, and cause serious damage to the crop. , But there is no report of its parasitic state on forest and oak trees, and this is the first report of this parasite plant on oak root in the world.