Abstract: Mire science is a new branch of physical geography in China and the history of study is shorter.So some basic theories and concepts are not veryclear and definite.Some ideas from foreign countries have been uesd in China,but they are not suited to the characteristics of out marshes.Because of vast and unbalanced mire distributions,scholars have two different views on geographical regularity of mire distribution.Some hold that mires are distributed intrazonally or azonally.Others maintain mire disributionis largely zonal.In this paper,the author cited some opinions proposeed by some scientists and examples showing zonal distribution.Author suggests that the distributions of various types of mires are restricted by the law of natural differentiation.Although mire develops in a certain zone,it does not occur-isolately in the zone,and it is closely related to and interacts with around zonational ecological environments.The natural complex in intrazonal environments bears evidence of zonality.Therefore,the author considers that mire distribution possesses zonaland intrazonal characteristics.The unified theory of mire genesis has been used in mire study and regardedas basis of mire classification.Analyses of pollen and C¹⁴ dating indicate that the theory is only suitableto frigid temperate taiga zone.China’s mire has mostly remained in the stage of low moor since the Holocene.There is not certainty of the law developing from low moor to high bog.The development law of mire not only depends on time,but also is restricted by space and sites.So it is not suitable that developments of all miresare included in a unified pattern.Mire develops as multi-pattern.