A　new　model　of　column　vane　hydraulic　pump　is　discussed.　Firstly,　taking　the　stator　surface　as　the　research　object,　the　equation　of　the　stator　surface　is　established　based　on　the　applied　triangular　space　theory.　MATLAB　and　Pro/E　software　were　used　to　establish　the　three-dimensional　model　of　column　vane　hydraulic　pump.In　the　second　part,　the　structural　characteristics　of　the　pump　are　described　in　detail,　the　working　principle　of　the　pump　is　analyzed,　and　the　correctness　of　the　stator　equation　is　verified.　Secondly,　on　the　basis　of　describing　the　structural　characteristics　of　the　cylinder　pump,　the　working　principle　of　the　new　cylinder　pump　is　analyzed.　Finally,　COMSOL　Multiphysics　is　used　to　visualize　the　flow　field　and　analyze　the　fluid-structure　interaction.　The　results　show　that　the　working　principle　of　the　new　hydraulic　pump　is　reasonable,　the　flow　field　diagram　of　the　pump　is　relatively　uniform　and　the　deformation　is　small　under　the　design　condition.　©　Published　under　licence　by　IOP　Publishing　Ltd.