Which google scholar citation format is IEEE standard? When I want to use formatted citation from google sholar it;s show 5 option to copy. Which one is IEEE standard? I add an image for clear my question.
None of the "standard" citations that they provide is IEEE format.  

Instead, you should use one of the links at the bottom to take the format for your preferred citation manager, such as BibTeX, which can then be used to format following any publication venue's guidelines.  

For IEEE in particular, the best option is generally BibTeX, because IEEE strongly pushes its authors towards preparing their publications via the IEEE LaTeX package and its accompanying BibTeX style format.