As an important branch of type-2 fuzzy logic system (FLS), a type-2 Takagi-Sugeno-Kang (TSK) FLS has a very wide range of applications in engineering, and the domestic research in this sphere is still less. Therefore, the research status of type-2 TSK FLS was summarized. Three architectures of the first order interval type-2 TSK FLS and their inference procedures were mainly analyzed. Applicable ranges of type-2 TSK FLSs were concluded, some successful application cases in recent years were listed, and a simulation case of short-term power load forecast was presented to verify the superiority of type-2 TSK FLSs in dealing with uncertainties. Finally, the deficiency at present was summarized and the future development was pointed out in order to provide reference for the later research.