This application provides an electronic device. The electronic device includes a radio frequency front-end and an antenna unit. The antenna unit includes an antenna body, the antenna body has a feed point and a ground point, the antenna body includes a first end and a second end, no gap is configured on the antenna body, the feed point is configured to connect to the radio frequency front-end, and the ground point is configured to connect to a ground of the electronic device. The antenna body generates a resonance of a first wavelength and a resonance of a second wavelength at work. The first wavelength is greater than the second wavelength, and an electrical length of the antenna body from the feed point to the ground point is greater than or equal to 1/4 of the first wavelength and less than 1/2 of the first wavelength. Therefore, this helps the antenna unit maintain good radiation performance, and also helps improve radiation efficiency of the antenna unit. In addition, an antenna mode corresponding to the antenna unit can be selected based on a communication requirement.