i want to transfer everything from one iCloud to another one in same iphone. i want to finish iCloud and i want to have a new one. is there any one to help me?
You cannot transfer everything from one Apple ID to another.
Documents, photos, yes... apps, books, music etc, no.
The ID that purchased those [even free apps, even the iDevice itself] is locked to the Apple ID that purchased them & can never be transferred. The only alternative would be to wipe all the old data & set up as a new device, then repurchase the things belonging to the old ID. [This would also require the permission [password etc] of the ID giving up the device.
If all you really require is to change the email address associated with your ID, then you can do that - the ID itself is not dependant on any given email address [in fact it doesn't even have to be an email address, it's just easier to think that way]
See Apple KB : Change your Apple ID for full details.
I move things from one iCloud folder to another using PathFinder. It requires a mac and it's not free, although they give you 30 day trial period. I have used it for years and bought the few additional upgrades that weren't free. It's published by Cocoatech and allows you to see the source and target in side-by-side windows. You can use a single command to move one file, a group of files or everything from one window to another. http://www.cocoatech.com will answer any other questions.