The invention provides a method for refining cyclohexanone oxime gaseous-phase rearrangement products. The method is characterized by comprising steps of dissolving the to-be-refined cyclohexanone oxime gaseous-phase rearrangement products in crystalline solvents and then carrying out crystallization and solid-liquid separation to obtain crude caprolactam; carrying out desolvation and distillationon the crude caprolactam to obtain refined caprolactam. The crystalline solvents include main solvents and a co-solvent; the main solvents are at least one type of ether, hydrocarbon and halohydrocarbon; the co-solvent is alcohol. The method for refining the cyclohexanone oxime gaseous-phase rearrangement products has the advantages that the method is particularly applicable to carrying out desolvation, dehydration and light impurity removal on rearrangement reaction liquid and is particularly applicable to the cyclohexanone oxime gaseous-phase rearrangement products which are yet to be subjected to heavy component removal treatment; the method includes simple technological processes, is high in product yield and few in residue and is environmentally friendly.