This paper mainly discusses the mud volcano disaster and its genetic mechanism in Ramree Island. Combined with the geological background of Ramree Island and the present situation of the mud volcano, grading analysis and micro-morphology analysis have been made by taking samples from three sampling sites of the northeast, the middle and the western part of Ramree Island. The finding is that the particle sizes of samples between 1～100 μm show a unimodel normal distribution, with similar grain size mid-value, concentrated size distribution, poor sorting, and quite positive skewness in grading symmetry. The samples’ matrix are mainly argillaceous, containing a lot of argillaceous clasts, tiny crystal clasts and a few pores, and having a little strongly altered plagioclase phenocryst and pyroxene phenocryst, from which, the authors can judge that the sampling sites have the same provenance. Thus, it can be deduced that there is a uniform argillaceous layer as the unified provenance of the Ramree Island mud volcano.
