Facebook is a social networking site that requires a certain level of security from its users. In order to combat spam and phishing, Facebook will not allow you to change your primary email address unless you have been inactive on the site for at least 30 days.
Yes you can.You can change your password and email address from the “Settings” tab on the left side of the screen.
To change your primary email on Facebook, you’ll need to go to Settings -> General -> Personal Info. Once there, find the “Update Your Email” button and click it.
The Facebook email address that is linked to your account is the one that you use to log into Facebook. To delete this email, click on the “Account” tab in the top right corner of your profile page. From there, scroll down until you see “Contact and Basic Info.” Click on “Edit Contact Information.” You will be prompted to enter your password or answer a security question. Once you have done so, look for the box labeled “Primary Email Address.