Tatyana Moskalkova asked Putin on Friday to support her request to form a group in Moscow to investigate the treatment of gays in the southern Russian region.
Putin agreed to her proposal for investigating what he called "the well-known information, or rumors" about what is happening to people "with a non-traditional sexual orientation."
The abuse was first reported in April by the independent newspaper Novaya Gazeta, which said about 100 suspected gay men were rounded up and tortured, and at least three were killed.