Hi I already try to search in the inter how to remove locking bolt. but did not see a tutorial. I see a new revolver tutorial but my revolver seems to be different and I try to seacrh what king of revolver is mine but no luck. So if anyone know how to remove this please give me some info.

See attchement for pictures.

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If that barrel does not have a hole in the front for the tail of the locking bolt, and with the blind pin holding the locking bolt in the lug, likely you aren't going to get it out.

What is that thing, and what happened to it???? It isn't a S&W, at least the barrel isn't. If it was then the answer would be easy, drive out the cross pin and push the locking bolt out from the front.

As above, it's no S&W, and you may not be able to get it out easily or at all.

Get a can of Kroil at a gun shop or from Brownell's, possibly a local machine shop supply house or farm store. Kroil is a super penetrating fluid, the best there is.
Drive out the cross pin, then stand the gun up in a braced position, muzzle down.
Put a few good drops of Kroil on the locking pin and in the cross pin holes.
Let soak 24 hours.

With the muzzle pointing UP, use a plastic screwdriver handle to give the area around the pin sharp raps, hopefully vibrating the pin out.

If this doesn't work, the only other option is to have a good machinist use a milling machine to precision drill the pin out without touching the actual barrel.
You DON'T try this with a drill or even drill press.
In order to do that you'd probably have to remove the barrel from the frame and that you DO NOT want to even consider.
That requires special tools like a frame wrench with polymer inserts that perfectly fit the front of the frame and a special barrel vise.

Another possible option is to have a hole drilled in the front of the lug so the pin can be pushed out with a punch.

Given the looks, it's probably a cheap foreign Spanish or Belgian gun and attempted barrel removal will likely bend or break the frame.

If all else fails, I think drilling a small hole from the front and attempt to push the stud out with a small punch is the way to go. Then hope it's freed up. I don't think I have ever seen such a crudely-finished barrel. It looks like it's been polished with a dull file.