Using the herbal medicines and their products has made the role of these plants more important in the economic cycle so that the increasing consumption of them is not restricted to developing countries but they even have a special stand in the developed countries. In our country, as the result of geographical and environmental diversity different species of plants grow. 7500 herbal species of plants forms the dominant kind. A large number of these species include herbal medicines. Therefore, studying the effective material of Iran's natural kind is necessary. Aromatic plants are those that include aromatic compound or, in other words, essence. Most of the aromatic compounds that exist in the plants have antioxidant and medicinal activities. Experts use the leaves and flowers of these plants widely in traditional medicine and aromatherapy. Herbal medicines besides having essence and aroma, because of having antioxidant property of their phenol compounds and being healthy are in the center of attention. phenol compounds are a member of secondary metabolits found in different plants. 4000-8000 phenol compounds are identified that are secondary and by-products of plants metabolism. The main role of these compounds in plants is to protect them against free radical stresses produced under photosynthesis and extra purple ray condition. phenol compounds include flavonoids and phenolic acids to phenols with high molecular weight, i.e. tanans. Flavonoids are the commonest natural antioxidants that are able to act as an antioxidant in a wide range of systems. Most of the foods that humans use have different amount of lipid that are different structurally and functionally. Furthermore, chemical and enzyme processes used in industry result in the production of new and changed lipids. Every compound that postpones or prevents the sharp spread caused by oxidation is called antioxidant. Adding antioxidant results in prolongation of preservation and prevention of drop in the nutrition value of the products. The function of antioxidant is to postpone the oxidation of an organic material in order to increase the useful shelflife or durability of that material. phenol compounds are the most effective antioxidant. These compounds donate hydrogen atom well and their radical average is stable because of resonance. Using the herbal elements and their extracts have been tested since a long time ago to prevent oxidative putridity of the foods. Substituting natural antioxidants is very usefull. In this project, extracts of Stachys lavandulifolia vahl , Cichorium intybus, Alyssum murale , Malva neglecta and Urtica dioica was extracted by methanol 80 persent. Then, the total amount of phenol compounds and flavonoids were measured. Antioxidant properties of extracts were studied through two systems model: DPPH and reducing ability. In the next phase, their antimicrobial properties were studied by Disc diffusion and Well diffusion methods against the following bacteria: Escherichia coli , Staphylococus aureus , Listeria monocytogenes , Bacillus cereus and rodotrula, and Penicilium Italicum fungal species. The results of studying the antioxidant ability of extracts through reducing ability system model showed that extracts have a good reducing ability and are able to change the oxidation-reducing situation of the metals and reduce their catalyst ability. The ability of extracts in trapping and deactivating the free radicals is shown by DPPH system model. In this system model, extracts showed proper antioxidant ability. The results of measuring antimicrobial property of extracs showed the antibacterial and antifungal properties of these extracts.