A dual-frequency and dual-polarization antenna for simultaneously transmitting and receiving dual-frequency 5G signals comprises: a first substrate; a first polarization antenna comprising a first radiation portion disposed on a first surface of the first substrate and a second radiation portion disposed on a second surface of the first substrate; a second polarization antenna comprising a third radiation portion disposed on the first surface of the first substrate and a fourth radiation portion disposed on the second surface of the first substrate; a second substrate located in a side of the second surface of the first substrate, a surface of the second substrate close to the first substrate is a copper-clad surface; and layout directions of the first polarization antenna and the second polarization antenna are orthogonal to each other in the first substrate. An electronic device comprising the dual-frequency and dual-polarization antenna is also provided.