Magnetic susceptibility and grain size of sediments have been widely used in climate change, environment monitoring, paleoenvironment modeling and palaeoclimatic reconstruction research; meanwhile the relationship between them has been a hot spot nowadays, which records the details of the sedimentary environment information. In order to explore the magnetic properties and grain size characteristics of the overlying soil and simulate the environmental changes, we analyzed the magnetic susceptibility and grain size of the soil. It was found that the content of ferrimagnetic minerals was rich in the soil deposition. Consequentially the mass susceptibility was increased simultaneously. The result of frequency magnetic susceptibility showed the crystal grain of SP, SD and MD existed extensively within the fine particle sediment, and there was hardly any SP in few samples. The soil texture was mainly dominated by clayey silt. In addition, the soil texture also had other presentation by consisting of silt or sandy silt which was rarely discovered. Most of the soil particles were fine; the soil of the study area was mainly positive skew distribution, and the grain-size sorting was "Not good". As for leptokurtosis, most of the soil samples were "Very narrow". The results revealed that the value of mass susceptibility was significantly correlated with the grain size. The larger the grain size and primary mineral content was, the bigger the mass magnetic susceptibility was. The finer particles, the more components such as SD, MD, and SP would accompany a stronger frequency magnetic susceptibility. There was a notable positive interrelation between the volume content of sand and the value of mass susceptibility, and an observably negative relationship between the volume content of silt and the value of mass susceptibility. For frequency magnetic susceptibility, the reverse was true. The magnetism characteristics of soil here were more obvious, which have been weathered (chemical weathering) slightly. Taking the features of magnetic susceptibility and grain size into consideration, the comprehensive characteristics will provide theory guidance for the study of soil texture and pedogenesis process, and also has some practical significance.