i want to open access report in vb means through vb6.0 form the report in .mdb file?

Answer 1

you need to have a report designer in VB and design the report there, then you can execute a QUERY in Access and use that as the SOURCE for your VB REPORT.

Answer 2

To do this, you must have MS Access installed on the computer, along with appropriate MS Office Objects (Setup does this itself).
Then create an "Office.MSAccess" object in VB6 and call the DoCmd.OpenReport:

Dim oAccess As Object
Set oAccess = CreateObject( "Access.Application")
oAccess.OpenCurrentDatabase( "c:\mydb.mdb", Exclusive:=True)
oAccess.DoCmd.OpenReport( "Report")