Marine red beds(MRBs)have attracted considerable attention due to their distinctive coloration,complex formation mechanisms,diverse sedimentary types,and valuable information regarding palaeo-oceanography,palaeoclimate,and even biological evolution. However,there are obvious bias in geological time and regional research and knowledge on MRBs,with particular focus concentrated on Precambrian,Early Paleozoic,Early Triassic,and Jurassic-Cretaceous MRBs. The late Silurian to Early Devonian represents a critical interval of global palaeogeographical reorganization,atmospheric compositional changes,and ecosystem transformation,yet MRBs from this period have received limited attention. Northern Xinjiang is one of the regions with relatively continuous late Silurian to Early Devonian strata in China. Based on previous research data,combined with our extensive regional investigations in recent years,newly acquired fossils dominated by conodonts,and sedimentary facies markers,this paper preliminary identifies the spatiotemporal distribution,lithological and biological assemblage characteristics of MRBs in the study area,and then makes comparisons with other contemporaneous MRBs in China. On this basis,the prospects for the study of MRBs in the late Silurian-Early Devonian are proposed. On the premise of establishing a high-precision biochronostratigraphical framework,a global database of MRBs at the late Silurian-Early Devonian is established to identify the distribution and characteristics of MRBs at this interval,and to carry out comprehensive comparison,then to explore the relationships between MRBs and important bio-environmental events in the period. It will contribute to a more comprehensive,systematic and in-depth understanding of the characteristics of the Earth’s multi-geosphere transformation and their coupling relationships during the late Silurian-Early Devonian.