How can I smooth Loop the animation curve I animated in inside animation editor in unity.

I have the animation made in animation editor,and made the first keys and the last keys same, and set the mode to loop, but it's looping smoothly, is there a solution for this?

Thanks

Presuming you meant "but it's not looping smoothly". If that is indeed the case, then select the first keyframe, right click and choose Flat. That will create a flat bezier handle. Do the same on the last keyframe. Now if you look at the animation as looped in the animation timeline it should appear as a smoother curve rather than abrupt changes.