Abstract: As an important land resource, reclaimed land, must meet the requirements of organic indicators such as polycyclic aromatic hydrocarbons (PAHs) in the relevant standards of land reclamation quality control. The detection of PAHs in reclaimed land samples faces difficulties such as complex matrix, high background interference, low content of target compounds, and difficulty in qualitative and quantitative analysis. This article created a method for determining trace PAHs in soil by Soxhlet extraction, magnesium silicate column purification, triple quadrupole gas chromatography-mass spectrometry (GC-MS/MS) selective reaction monitoring (SRM) mode. Firstly, we optimized the sample pretreatment , GC and MS/MS test conditions, and then selected three representative reclaimed land samples such as metal mines, oil fields and coal mines, and finally adopted this method to investigate PAHs pollution distribution, analyze sources and assess risk. The results showed that: ①The SRM mode of GC-MS/MS can effectively reduce matrix interference and improve the separation effect of target substances, possessing better selectivity, precision, sensitivity , qualitative and quantitative accuracy. The relative standard deviation (RSD) of the relative response factors of 15 PAHs calibration curves was from 1.1% to 3.4%, the method detection limits was from 0.12 μg•kg⁻¹ to 0.31 μg•kg⁻¹, the recoveries of samples ranged from 71.9% to 104%, and RSD was from 2.3% to 9.3%, all of which met the actual analysis requirements; ②The average PAHs of a metal mine in Tongling and a coal mine in Huainan were 224 μg•kg⁻¹ and 436 μg•kg⁻¹ , respectively, indicating mild pollution, while the average PAHs of an oil field in Yangzhou was 729 μg•kg⁻¹, indicating moderate pollution. The soils in the three types of reclaimed areas were mainly polluted by middle and high rings PAHs (accounting for 84.6%, 85.8%, and 78.2%, respectively); ③Based on the analysis of PAHs isomers ratio and the low ring/middle high rings ratio, it was found that the main source of PAHs in the reclaimed soil of a metal mine in Tongling was combustion (accounting for 60%), while the main sources of PAHs in the reclaimed soils of an oil field in Yangzhou and a coal mine in Huainan were mixed sources (accounting for 80% and 60%); ④After evaluation by the TEQ_BaP, the TEQ_BaP value of PAHs in soil of a metal mine in Tongling was 29.5 μg•kg⁻¹, indicating no ecological risk. The TEQ_BaP values of PAHs in soils of an oil field in Yangzhou and a coal mine in Huainan were 82.6 μg•kg⁻¹ and 57.0 μg•kg⁻¹, respectively, indicating certain ecological risk. The research results provided technical support for the quality evaluation of reclaimed land, and also provided data for further research on the migration and transformation of PAHs before and after soil treatment.