This paper, based on 15 soil samples in 5 profiles around a typical development well in the southern Renqiu Oilfield, measures the polycyclic aromatic hydrocarbons (EPA’s controlled 16 PAHs as perference) via gas chromatographymass spectrometry detector (GC-MS), with the results indicate that the soils in nearby the well have been greatly contaminated. The total PAHs declines with depth, and with a peak at 20 cm in depth. The lowring PAHs such as Naphthalene, Fluorene, Anthracene and Phenanthrene and so on have a big proportion, of which the Naphthalene is the most. The PAHs decreases with rings, but the highring PAHs have an increasing proportion towards the well. The lowring PAHs are distributed chiefly at a depth of 0~20 cm and the middlehigh ones at 20~30 cm.