Findings and opuses of Islamic civilization era are designed and rendered on different surfaces such as wood, stone tablet, tore, cloth, kilims, jijims, carpets and rugs in geometrical or curvilinear forms of motifs existing in nature or purely spiritual symbols. The art of carpet designing and weaving which was mixed with its concurrent crafts and industry as well as naturalistic and visual symbols, is the key to the connection of the artist to his/her surroundings and even his/her thoughts, faith and beliefs and incorporated with novelty. This research is mainly concerned with such Persian carpets which their designs include a Mihrab on a carpet (prayer rug). This paper focuses mainly on Persian Mihrabi carpets to present the common concepts in the culture of Islamic era, such as, "Taqe Mihrab" and "Darvaze"(gate). Then the origins of such carpets are examined regarding the painting works, and some works are introduced. Some early examples, in which flowers, plants and birds are used as well as two common symbols in such carpets, i.e., Qandil and cypress tree, are discussed and analyzed.