An antenna and an electronic device are provided and belong to the field of communication technology. The antenna includes an antenna substrate and a flexible circuit board. The antenna substrate includes: a first dielectric substrate, a first conductive layer on the first dielectric substrate and including at least one first feed line and at least one second feed line; a second conductive layer on a side of the first dielectric substrate away from the first conductive layer and including at least one first opening. The flexible circuit board includes: a second dielectric substrate and a third dielectric substrate opposite to each other; a third conductive layer between the second dielectric substrate and the third dielectric substrate; a first feed structure on a side of the second dielectric substrate away from the third conductive layer; each second feed port of the first feed structure being electrically connected to a corresponding first feed line; a second feed structure on a side of the third dielectric substrate away from the third conductive layer; each fourth feed port of the second feed structure being electrically connected to a corresponding second feed line.