The present invention relates to a nozzle impinging stream rearrangement reactor, which mainly comprises a reaction kettle, wherein a stirring device and nozzles are arranged inside the reaction kettle, the nozzles are arranged horizontally and symmetrically, and are installed in a tangent line material feeding manner, the outlet position of the nozzle is provided with an immersion impinging chamber with an upward opening, a defogging cover is arranged above the immersion impinging chamber, and 1-5 layers of material feeding assemblies are arranged inside the reaction kettle, wherein each layer comprises 1-5 pairs of the material feeding assemblies, and every layer of the material feeding assemblies are axially arranged in a parallel manner. According to the present invention, turbulent flow kinetic energy in a multiphase fluid is adopted to strengthen micro mixing between fluid masses, increase conversion rate and selectivity of a caprolactam rearrangement reaction, and reduce reaction byproduct eight formation. The nozzle impinging stream rearrangement reactor is used for rearrangement processes of caprolactam production and chemical engineering production processes of multiphase liquid rapid reactions.