Compaired with the general weapon, the explosive weapon can cause not only bigger defects of soft tissue with severe contamination, but also bone defects or bone exposure in limb injury.

In the whole production process of oil exploration exploitation, there is a type of severe contamination environmental substance to coupled with petroleum together withdrawn oily sludge.

Conclusion the contamination of air in the operating room is severe, the restriction of the activity and the number of staff in the operating room can reduce the precipitating bacterial density.