Film academy chief executive Dawn Hudson introduced the new rules to members in an email.
In October, the academy broke with tradition and made Harvey Weinstein just the second person ever expelled from the Oscars' governing body.
The new code of conduct stipulates that the academy is no place for "people who abuse their status, power or influence in a manner that violates standards of decency."
The academy's board may now suspend or expel those who violate the code of conduct or who "compromise the integrity" of the academy.
It was formed after Weinstein was accused by dozens of women of sexual harassment and abuse. Weinstein, who won an Academy Award for 1998's "Shakespeare in Love," has denied all allegations of non-consensual sex.
Hudson told members that more details on the process by which offending members will be judged will be announced later.