A study on potential and kinetics of hydrocarbon(HC)generation of 3 0 source—rock samplesfrom a certain hollow has been made by means of ROCK—EVAL technique．In the pyrolysis ex—periment，the source material types，maturation and genetic potential of source rocks from threeUpper Jurassic horizons of that area have been evaluated in terms of such indicators as the type—index，genetic potential and maximum pyrolysis temperature(Tmax)．The results show that thepyrolysis HC yield of immatural source rocks is much higher than that of matural rocks whentheir source material quantity and content of organic matter are about the same，which suggeststhat it is important for evaluating the HC genetic potential to use immatural samples for pyroly—sis．In the pyrolytic simulation experiments of other tWO immatural samples．the relationship be—tween the hydrocarbon yield and temperature has been obtained，and on that basis the kinetiealparameters of source rocks，such as reactional grades，activation energies and frequence factorswere calculated．