Now my customer directly login after click confirm the email, i want if customer click the confirmation mail after need to login.
Please set yes in the below configuration in your admin panel, first log in to the admin panel of your Magento and go to
Store menu->Configuration->Customer Configuration -> Create New Account
Field name: Require Emails Confirmation.
Set the drop-down menu to Yes to enable email verification and click on the Save Configuration. After saving configuration you need to clear your Magento cache and check Hope it will work.....