The invention discloses a multi-band antenna and a mobile terminal. The multi-band antenna comprises a feed point, a grounding point, a super high frequency oscillator, a first ultrahigh frequency oscillator, a second ultrahigh frequency oscillator and a matching component. The feed point is used for being connected with a feeder line, the grounding point is used for being connected with a ground wire, the super high frequency oscillator is coupled to the feed point and the grounding point, the first ultrahigh frequency oscillator is coupled to the feed point and the grounding point, the second ultrahigh frequency oscillator is coupled to the feed point and the grounding point, and the matching component is coupled between the super high frequency oscillator and the first ultrahigh frequency oscillator and used for adjusting the coupling coefficient between the super high frequency oscillator and the first ultrahigh frequency oscillator. According to the technical scheme, the multi-band antenna has the advantages that a 2.4 GHz wireless network antenna, a Bluetooth antenna, a 5GHz wireless network antenna and a GPS receiving antenna are integrated on a metal sheet, in this way, the space, occupied by the antennas, inside the mobile terminal is reduced, the arrangement space of the antennas is more sufficient, the possibility of interference among the multiple antennas is reduced, and then arrangement of the antennas inside the mobile terminal is facilitated.