Control Center or the Dock?  If the dock type "sudo apt-get install dde-dock"  It may reinstall whatever you removed because of dependencies.  But pulse seems odd to have uninstalled the dock.  If you can't get to the terminal Ctrl-Alt-F1 should bring it up.  then init6 should reboot, or Ctrl-Alt-F7 should take you back to the GUI.

control center where you can edit all the wifi, mouse, background, display etc...

Okay then run "apt-get install dde-control-center"  should fix it.

omg! thank you! last . how to add the wifi icon again on dock?

It looks like right clicking the dock.  Select Notification Area Settings.  Click the switch by networks so its blue.  Should put it back.

My Notification Area is empty.

You may have also removed this so run : "sudo apt-get install deepin-notifications"

You may want to install a package manager like Synaptic its what I use.  You can browse all available packages and search for programs.  Try to find what you accidentally removed or see whats being removed before you install new packages if any.

To install run "sudo apt-get install synaptic"