Nicky Morgan is considering installing a panic button in her office after the death of Labour MP Jo Cox.
The Education Secretary told the Sunday Times her colleagues regularly received abuse and she thought security measures would become more common.
She also called for the tone of the EU referendum campaign to change.
"Panic buttons are going to become a lot more common. I'm thinking of having one fitted in my office," she said.
The Conservative MP for Loughborough, who is also minister for women and equalities, is campaigning for Britain to remain in the EU.
"During the last few weeks of the debate the tone hasn't been right. If we can learn anything from this we can go back to some fundamental good values.
"That has to be the right thing to do."