Abstarct: Potato (Solannum tuberosum) plays an important role in human nutritron due to high produce and an alternative for some grain such as wheat, rice, and its compatibility with different soils and climates. Phosphorus is one of the most important elements required for potato and after nitrogen and potassium, its proper application is necessary. On the other hand, the application of excessive phosphate fertilizers to creat problems such as Poisoning Plant, inbalance in nutritron uptake, decrease in growth and yield, contamination of surface and subsurface waters and inbalance in biological of Soil. Therefore, due to the importance and positive and negative effects of phosphorus in plant nutrition and in human nutrition and health, this research was done to study the quantity of available and soluble phosphorus in soil. It was also performed for improvement and amendment of nutrition management and proper fertilizer recommendation and reduce environmental hazards that caused by use of excessive phosphate fertilizers in agricultural lands around Mojen cityt. It located 35 km from the Shahroud city. For this purpose, Soil samples were collected from 30 fields under cultivation of potato in two stages ( the first stage was before planting and the second stage was after the crop harvest). From each site, soil samples were collected from two depths: 0–25 and 25–50 cm, a total of 120 soil samples were collected and global position system (GPS) was used to determine the sampling locations. The soil samples were analyzed to measure for solution and available phosphorus and the amounts of pH, EC, K, %OC, CaCO3. Statistical evaluation was performed on all results and was used Pearson correlation method to investigate the correlation between variables. For geostatistical analyses the elements semivariograms were developed and then the suitable theory model fitted to the experimental semivariograms. The information generated from the fitted models were applied to make the use of ordinary kriging for estimating the value of elements in the unknown locations. All above mentioned steps were performed with GS+ software and preparing maps were carried in GIS environment. Spatial distribution map of factors was do basis on standards of research institute of soil and water. The results showed that the soil samples had slightly high alkalinity, high calcium carbonate and Potassium available, relatively suitable organic carbon and very high available phosphorus concenterations. Therefore, in this study, it is suggested to avoid the application of phosphate fertilizers in lands around the city for at least 2 -3 Years.