In order to ascertain the influence of soil salinization level on the nutrient indexes, the southern coast of Laizhou Bay was taken as the research area. Through systematic sampling and testing, soil data of various indicators such as total salt content, pH, total nitrogen, total phosphorus, total potassium, and organic matter were obtained from 212 topsoil samples, and the influences of soil salinization on nutrient characteristics were explored using methods such as correlation analysis and one-way ANOVA, combined with geostatistics and geographic information system technology. The results showed that the average value of soil total salt content was 0.84%, with strong spatial variability, and the overall distribution characteristics were high in north and low in south. The average value of soil pH was 8.28, mainly alkaline soil. The average values of total nitrogen and organic matter were 0.52 g/kg and 9.8 g/kg, respectively, indicating a deficiency level. The average values of total phosphorus and total potassium were 0.64 g/kg and 17.1 g/kg, respectively, indicating a moderate level. The comprehensive grade of soil nutrients was mainly in the fourth, with a sample size of 64.15%. There was a significant positive correlation between the contents of various soil nutrient indexes, showing a strong spatial correlation. All soil nutrient indexes were significantly negatively correlated with total salt content, and significantly negatively correlated with soil pH except for total potassium. Soil nutrient indexes were the lowest in coastal saline soil. The results of this study can guide regional soil improvement and development.