The security review will look at the system that allows people to sit in the public gallery.
It will also ask why MPs were allowed to leave the room before they knew what the purple powder was.
High profile protesters
The incident comes just weeks after a £600,000 security screen was installed in the Commons. Two men have been arrested following the flour attacks.
Fathers 4 Justice, which campaigns for dads to be allowed to see their kids, has carried out lots of high-profile protests in recent months.
Sometimes dressed as superheroes, protesters have climbed bridges and brought traffic to a standstill.