The SVN plugin was used in Eclipse, which was normal without any changes, and in the last few days when the file was viewed in Eclipse, the version number behind the file, the status icon for the file, and so on were gone. Think there is a plugin conflict, uninstall a lot of other related plug-ins, no, uninstall the SVN plugin reinstall also not.
Check plug-ins are in, update, submit and other operations can be normal use, but not to see the state.
After a search, find a solution to the problem.
Open: Windows->preferences->general->appearance->lable decorations Tick one of the SVN entries.
If there is a previous phenomenon, there may be another project in your workspace that contains SVN information, and SVN information may be invalid or an SVN address that your users cannot access. So you need to delete that project, or right-click on the project->team-> disconnect in Eclipse, then right-click on the project->team-> cleanup, so that the project's SVN information is deleted, and then
Open: Windows->preferences->general->appearance->lable decorations Tick one of the SVN entries.
"Go" resolves an issue that does not display SVN version information in eclipse