The invention relates to the technical field of mobile communication, and in particular relates to a phase-shifting structure and an antenna. The phase-shifting structure provided by the invention comprises a cavity, a combining circuit arranged on the cavity and a phase-shifting component arranged in the cavity. The cavity comprises a first sub-cavity and a second sub-cavity. The combining circuit is arranged between the first sub-cavity and the second sub-cavity. The phase-shifting component comprises a first frequency band phase-shifting component and a second frequency band phase-shiftingcomponent, wherein the first frequency band phase-shifting component and the second frequency band phase-shifting component are arranged in the first sub-cavity and the second sub-cavity respectively.Input ends are arranged on both sides of the combining circuit. The output ends of the first frequency band phase-shifting component and the second frequency band phase-shifting component are connected with the input ends on both sides of the combining circuit respectively. According to the phase-shifting structure provided by the invention, two frequency band phase-shifting components are placedin different sub-cavities respectively; the impact resistance of the phase-shifting structure is improved; and passive intermodulation products can be avoided.