Abstarct: In order to investigate the effect of different levels of molybdenum, salinity and mycorrhizal fungi Glomus versiform on soil chemical characteristics and qualitative and quantitative function of maize, a vase experiment was carried out as a factorial experiment in a randomized complete block design with three replications in Shahrood university in 1393. The experiment treatments were included three levels of molybdenum 0 ,10 and 20 mg Mo/kg soil as the first factor, three levels of salinity 0, 4 and 8 dS/m as the second factor and two levels of inoculation and without inoculation with mycorrhizal fungi Glomus versiform as the Third factor. The results showed that salinity had a significant effect on plant dry weight. In this study, mycorrhiza caused to increase plant dry weight. Salinity and mycorrhiza had significant effects on leaf carbohydrate. In this experiment, root proline significantly increased by salinity. salinity has caused to decrease the amounts of photosynthetic pigments such as chlorophyll a,chlorophyll b, carotenoid, flavonoid, anthocyanin, while the inoculation with mycorrhiza and the application of different levels of molybdenum have caused to increase them. Investigating the intraction effects of salinity and mycorrhiza showed that the amount of sodium increased when the plants received the maximum level of salinity with the lack of inoculation with mycorrhiza. Mycorrhiza could decrease the amount of sodium in leaf significantly. The joint application of salinity and molybdenum and mycorrhiza had a significant effect on potassium of leaf. The intraction effects of the experiment factors were significant on the amount of molybdenum in leaf. The increase of salinity up to 4 dS/m with the application of 0.01 g Mo/kg soil, has caused to increase catalaseenzyme, however it decreased in higher concentrations of salinity and molybdenum. In the investigating the intraction effects of mycorrhiza and molybdenum on guaiacol peroxidaseenzyme, the joint applicationofmolybdenum and mycorrhizal has caused to increase this enzyme. Salinity increased the electrical conductivity of soil. The use of mycorrhiza could increase the soilavailablephosphorus. The application of molybdenum and mycorrhizal fungi have caused to increase the amount of soil total molybdenum, while salinity had different effect on this characteristic.