Reviews focus on different types and compositions of co-culture microorganisms that degrade polycyclic aromatic hydrocarbons (PAHs),the interactions among microorganisms in the process of co-cultured PAHs degradation,the factors affecting PAHs degradation,the construction of co-cultured system and the application of co-culture microorganisms in PAHs degradation.Existing problems in remediation of PAHs pollution by co-culture system are summarized and considered.