In order to illuminate the spatial distribution characteristics of soil nutrients from saucer-shaped depressions to island forests, this paper chose the saucer-shaped depression within the wetland ecological test station on the Sanjiang Plain, part of the Chinese academy of sciences, as a study site during the non-growing season, and discusses the spatial distribution characteristics of total nitrogen (TN) content, total phosphorus (TP) content, and their stoichiometric ratios and influential factors. The results showed that the average TN, TP and N/P, respectively, displayed a tendency towards "V", inverted "N", and "V" type distributions in soil from saucer-shaped depression to island forests, the average of each was 2278.11 mg/kg, 820.50 mg/kg and 2.44 respectively, and the Coefficient of Variation (CV) was TN (51.77%) > N/P (36.07%) > TP (13.65%). In soil layers from 0 to 50 cm, TN, TP, and N/P decreased gradually with increasing soil depth, but TN was mainly concentrated in the upper middle layer of soil at the different points, and the highest values at all points were found in the surface area of soil. The enrichment depth of total phosphorus was the same as that of TN, but the content was similar at various points at the depth of 20 cm in the soil, and gradually decreased within the depth of 20-50 cm. The maximum value of N/P at various points was consistent with the distribution of TN and TP, and the enrichment depth was consistent with the two elements. The correlation analysis showed that TN and TP in soils both had a good correlation from saucer-shaped depressions to island forests, and the distribution of soil organic matter (SOM), plants, hydrological conditions, seasonal variation, and soil temperature played an important role in nutrient distribution.