Storm deposits ranging from the Precambrian era to the present day are found extensively in stratigraphic layers spanning almost all ages. These deposits serve as good records preserving information on paleo-extreme weather events that transpired throughout this extensive timeframe. Research on palaeostorm deposits is crucial for supplying vital long-term information for forecasting the evolutionary trends of future extreme weather events. The precise recognition of storm deposits is the pivotal foundation of this research. In previous research, the primary emphasis has been placed on easily discernible sandy storm deposits, carbonate (calcareous) storm deposits, storm pebbles, cobbles, and shell beds associated with storms because of their relative ease of identification. However, there has been a notable absence of investigations on muddy storm deposits, which presents challenges for identification. In recent years, significant progress has been made by researchers in refining the methods and indicators for identifying coastal muddy storm deposits, understanding depositional processes, and reconstructing paleostorm history. These advancements have played a crucial role in enhancing our comprehension of storm sediment classifications and in reconstructing the detailed history of paleostorm activity at high resolution. This study focuses on reviewing the recent advances in identification indices for coastal muddy storm deposits. We found that the integrated use of elemental, isotopic, and organic geochemistry serves as a sensitive indicator critical for the identification of muddy storm deposits. However, further research is required on the response mechanisms between the geochemical identification indicators of muddy storm sediments and the dynamics of storm deposition processes. It is emphasized that systematic comparative studies of muddy storm sedimentation in different sedimentary environments, field in situ observations, and laboratory simulations, as well as the strengthening of interdisciplinary collaboration, are worthy of priority as research focuses and directions for the future.