Theobjectiveofthisstudyistodealwithunsteadyforceactingonapitchingfoilinshearflowandtostudytherelationoftheforcecharacteristicswithvortexsheddingnearthefoil.Thetwo-dimensionalincompressibleNavier-Stokesequationsinthevorticityandstream-functionformulationweresolvedwiththefourth-orderessentiallycompactfinitedifferenceschemesforthespacederivativesandafourth-orderRunge-Kuttaschemeforthetimeadvancement.Theforcecharacteristicsandvortexsheddingofthepitchingfoilinshearflowswereinvestigated.Theeffectsofsometypicalfactors,includingtheincomingflowshear,theoscillatingfrequencyandamplitude,onthevortexsheddingandforcebehaviorwereanalyzedanddiscussed.