In the Part environment, right-click on the feature in the feature tree and select Edit Sketch/Composite.
Click
the
Sketcher Tools 
icon. The Sketcher
Tools toolbar is displayed.
Click the
Edit Sketch Plane
icon.
It is possible to change the sketch plane when editing a sketch.
To change the sketch plane:
In the Part environment, right-click on the feature in the feature tree and select Edit Sketch/Composite.
Click
the
Sketcher Tools icon. The Sketcher
Tools toolbar is displayed.
Click the
Edit Sketch Plane icon.
Select Edit sketch plane from the Create mode popup menu.
Pick a new planar or datum plane and Exit.
The new plane is highlighted and the geometry is moved to the newly-selected plane.
Note: This option is only available in a part or NC document. (Does not appear in Drafting).