A vehicle inspection system, comprising: an inspection passage; a vehicle dragging system arranged in the inspection passage, wherein the vehicle dragging system comprises a first dragging means and a second dragging means, which are sequentially arranged along a vehicle dragging direction, and in the vehicle dragging direction, the first dragging means is arranged at the upstream of the second dragging means, and a separating section is arranged between the first dragging means and the second dragging means, so that the first dragging means and the second dragging means are separated by a preset distance in the vehicle dragging direction; and a radiographic inspection system having a radiation source for emitting beams, wherein at least a part of paths of the beams emitted from the radiation sources of the radiographic inspection system passes through the separating section between the first dragging means and the second dragging means; characterized in that, the vehicle inspection system has a first mode, a second mode and a third mode, under the first mode, the radiographic inspection system is configured to not inspect the vehicle when the vehicle voluntarily passes the inspection passage, under the second mode, the radiographic inspection system is configured to inspect the vehicle by adopting a dosage lower than a first preset value when the vehicle voluntarily passes the inspection passage, and under the third mode, the radiographic inspection system is configured to inspect the vehicle by adopting a dosage larger than or equal to a second preset value when the dragging system drags the vehicle to pass the inspection passage. an inspection passage; a vehicle dragging system arranged in the inspection passage, wherein the vehicle dragging system comprises a first dragging means and a second dragging means, which are sequentially arranged along a vehicle dragging direction, and in the vehicle dragging direction, the first dragging means is arranged at the upstream of the second dragging means, and a separating section is arranged between the first dragging means and the second dragging means, so that the first dragging means and the second dragging means are separated by a preset distance in the vehicle dragging direction; and a radiographic inspection system having a radiation source for emitting beams, wherein at least a part of paths of the beams emitted from the radiation sources of the radiographic inspection system passes through the separating section between the first dragging means and the second dragging means; characterized in that, the vehicle inspection system has a first mode, a second mode and a third mode, under the first mode, the radiographic inspection system is configured to not inspect the vehicle when the vehicle voluntarily passes the inspection passage, under the second mode, the radiographic inspection system is configured to inspect the vehicle by adopting a dosage lower than a first preset value when the vehicle voluntarily passes the inspection passage, and under the third mode, the radiographic inspection system is configured to inspect the vehicle by adopting a dosage larger than or equal to a second preset value when the dragging system drags the vehicle to pass the inspection passage. under the first mode, the radiographic inspection system is configured to not inspect the vehicle when the vehicle voluntarily passes the inspection passage, under the second mode, the radiographic inspection system is configured to inspect the vehicle by adopting a dosage lower than a first preset value when the vehicle voluntarily passes the inspection passage, and under the third mode, the radiographic inspection system is configured to inspect the vehicle by adopting a dosage larger than or equal to a second preset value when the dragging system drags the vehicle to pass the inspection passage.