When i connect my pendrive,files are showing,but everything is like a shortcut file.I can't open.Pls help me?

Yes that's 100% sure that it a virus. Format your pen drive. If you make a back up of those files somewhere the virus will be there still with those files. So your PC might still get infected again. There are software on internet which charges money to save our files on pen drive and recover it too. So it's up to you. If i would be in your place i would formatted the pen drive immediately. Sometimes it also makes the pen drive corrupt.