This　paper　is　the　first　of　a　series　of　papers　on　the　roughness　characteristics　of　the　burden　surface　in　the　blast　furnace.　The　measurement　method　of　the　burden　surface　roughness　texture　is　described,　and　the　overall　roughness　characteristics　of　the　burden　surface　are　studied　from　a　statistical　point　of　view.　This　study　focuses　on　two　typical　granularized　burden　materials,　coke　and　sintered　ore,　which　present　four　kinds　of　burden　particles　under　two　individual　particle　sizes.　Simulated　cold-state　burden　belts　proportional　to　the　practical　burden　radial　sectors　were　stacked　in　a　pilot　plant.　An　RGBD　camera　was　used　to　measure　the　simulated　burden　belt　surfaces　to　obtain　the　surface　texture　details.　Four　corresponding　digital　eleva-tion　models　of　the　burden　belts　were　obtained　through　data　processing.　The　root　mean　squared　height,　skewness,　kurtosis,　and　spatial　autocorrelation　function　are　selected　as　statistical　indexes.　The　obtained　digital　elevation　models　were　counted.　The　results　show　that　all　four　kinds　of　burden　surfaces　are　Isotro-pic-Rough-Surface.　In　addition,　the　height　distributions　of　the　rough　burden　surface　are　close　to　the　Gaussian　distribution.　Also,　the　spatial　autocorrelation　functions　of　the　coke　and　large-sized　sintered　ore　burden　surfaces　are　close　to　the　Gaussian　function　form.　And　lastly,　the　spatial　autocorrelation　function　of　the　small　sintered　ore　burden　surface　is　close　to　the　exponential　function　form.