<p>There are provided a NOx removing apparatus using a plasma reactor to remove pollutant NOx generated from a diesel engine. The apparatus supplies high temperature reducing ambient gas during the NOx reduction by the occlusion catalyst in an existing NOx reducer using the occlusion catalyst to effectively activate reduction and removal of the NOx. The supplying of the high temperature reducing ambient gas is performed by a separated plasma reactor such that an engine is not interfered during the operation and fast reaction as feature of plasma reforming reaction is used to rapidly feed the ambient gas when needed. A liquid fuel and a gas supplied to the plasma reactor are effectively mixed with each other to remarkably increase reform performance of fuel.</p>
