Abstract: According to the poor nutrient and soil salinization of Wuwei industrial park in Gansu in northwest arid region, the author collected a large number of samples in the region and measured the soil salinity and nutrient content in 0-20 cm. By the statistical analysis and comparison the values of the water content, pH, salinity, organic matter and available nitrogen phosphorus and potassium (NPK). The results indicated that: (1) in the sample region, besides the low water content, the degree of soil salinization was predominant and the majority of soil belonged to the moderate or severe saline-alkali land. (2) Dued to the low nutrient content, the soil was relatively poor. There were obvious differences between the soil organic matter and the available NPK. In short, the nitrogen contents of the soil in the region were seriously rare. The available phosphorus contents were at a moderate or deficient level, and the available potassium contents were at a sufficient level or an adequate level. As a final statement, the author suggested that the applications of the physical, chemical and biological measurement could reduce the degree of soil salinity. At the same time, it was proposed that there were many methods to improve soil fertility, such as, the proper use of organic, nitrogen and phosphorous and potassium fertilizers.