The　study　of　hemodynamics,　which　refers　to　dynamics　inside　the　blood　circulation,　mainly　includes　the　flow　rate,　flow　resistance,　pressure,　shear　stress,　disturbed　flow,　as　well　as　their　associations　in　between.　Therefore,　with　its　important　significance　in　the　clinical　treatments　of　vessel　curvature,　arterial　stenosis　or　occlusion,　pathological　artery　branches　and　aneurism,　study　about　hemodynamics　is　essential　to　human　health.　Currently,　extensive　researches　on　hemodynamics　have　been　conducted　with　respect　to　artery　bypass,　coronary　arterial　stenosis,　abdominal　aortic　aneurysm,　atherosclerosis,　cerebral　aneurysm　and　swirling　flow.　With　the　development　of　such　research　on　hemodynamics,　surgical　planning　and　interventional　therapy　have　improved　rapidly.　The　influence　mechanism　of　hemodynamic　parameters,　including　pressure,　flow　resistance,　flow　rate,　wall　shear　stress,　blood　viscosity,　flow　separation,　turbulent　flow,　vortex　on　the　post-operation　complications　could　be　deeply　explored　with　the　help　of　more　and　more　clinical　apparatus　and　have　gained　some　achievements.