I want to add ArcGis data into Splunk but I do not know how to add because Arcgis data is different from Splunk data.
Anyone can help?
What do you mean "Splunk data"? - Splunk's not too fussy on data.
Have you read the following : http://docs.splunk.com/Documentation/Splunk/latest/Data/Configureyourinputs
What format is it in then? - example?
If it is not human-readable (e.g. binary), is there an API that you can query with a Splunk scripted input? (Docs ref here)