简介：Themacroandmicrocloudphysicsstructuresandtheirevolutionwithtimearethecoreofdescribingcloudfieldsinessence.Theyarenecessaryatmosphericenvironmentnotonlyinaviationandspaceflightactivitiesbutalsoforatmos-phericradiationtransferandacidrainformationresearch.Unfortunatelyitisdifficulttoobtainanentireenvironmentalcloudfieldbyusingobservationmethodsdirectly.Thus,byuseofcomputationphysicsmethodtobuildacloud-systemmodelmaybeanindispensablewayforthistopic.Thispaperpresentedacloud-systemmodelforthisgoal,andsimu-latedarealcase.Theresultsofcomputationshowedthatthemacrostructureofthecloudfieldwasbetterconsistentwithrealobservation,andthemicrostructurewasfairlyreasonable.Theoutputofmodelcouldprovidealltheinformationaboutthecloudfield:(1)size-distributionspectrumofhydrometeorparticles(point),(2)verticalprofile(line),(3)hori-zontalorverticalsectionofmacroandmicroparameters(surface),and(4)cloudcover,patternofcloudandconfigura-tionofcloud,etc.(body).