Abstract: Based on research status of coal based activated caroons at home and broad,the paper concluded the raw material coal with different melamorphic degree affcted to the pore structure of ctivated caron,summarized general law of coal metamorphic dege ffected to the pore structure of actiated carbon.analzed developnent tendency of coal based activated cabon and studied the impertant signficances of coal metamorphic degree affeced to the pore stoncture of the activated carnoon.T7he resutis showed tat the higher of coal metamorphic degree was and the micro pore of aciated caroon pore structure would be ighly developed.With the metamorphic degree decreased,the mesopore percentage in the pore stricture of ctivated caoon would be steadily inreased and such tendency would be obvious in e&ch subclass of biuminous coal The influencelaw of the coal melamorphic degree affeced to the pore structure of the acivated cabon would be fechnical base to pre:are acivated caroon and could provide theoretcal references to adjust porestructure of acivated cabon in order to realize target to properly selec sutable dsoner according to size of adsorbed quality.