Make a contour by ArcGIS

Before using ArcGIS, please make sure the tool”Spatial Analyst” has chosen.
(if not, go to check “tool”-->”customize”-->”toolbars”-->”spatial analyst”

1.the same as ArcView, Be sure your data is numeral.
2.Open ArcMap,
“tools”-->”add XY data”, then the interface will look like this



3.Definition the range of analysis
Spatial Analyst-->Options-->Cell size-->AS specified below(you can choose any size you want , for this example, it’s “0.01”



4.Point-->contour
Spatial Analyst-->Interpolate to RasteràInverse Distance Weighted.
In Z value field, choose the data you want to draw, then clip OK




5.Final, the appearance will like that.