Is there any short key to switch between two active tabs in Intellij idea?

You can check what shortcut is assigned to action under Preferences/Seetings | keymap. See the related screenshot: 

https://i.imgur.com/X2kpnQI.png

Default shortcut to "Select Next Tab" action on macOS is Shift+Command+[

Hi Annikov, thanks.

Select Next tab will switch to next tab one by one, not between latest two active tabs.

Is there any toggle function? Thanks.

Invoke Switcher to see a list of recently opened files and switch between them easily. The file being edited right now is highlighted. Invoke switcher with hotkey Ctrl+Tab or Ctrl+Shift+Tab.

There is a trick to it, lets follow…

1. Go to keymap setting.
2. Search for switcher.
3. Set Iterate Switcher Forward to use Ctrl + Tab.
4. Set Iterate Switcher Backward to use Ctrl + Tab.
5. Warning pop-up appears, Select keep option.

There you go, now you can switch between your current  tab and previous tab.

Note: Use “+” to add this shortcut as this shortcut switches menu focus in settings panel.