An antenna and an electronic device are provided. The antenna includes a plate body. The plate body is provided with at least one antenna unit. Each antenna unit includes a groove formed in the plate body, a coupling frame body, four radiators, four couplers, and four electric conductors. The four radiators and the four couplers are disposed in a space enclosed by the coupling frame body. The coupling frame body is disposed in the groove. Each radiator is provided with a feed point. Different electric conductors penetrate through the groove bottom of the groove and are respectively connected to the feed points on different radiators. The four radiators access two pairs of differential signals and are connected to the four electric conductors in a one-to-one correspondence.