The present disclosure provides a phase shifter, an antenna including the phase shifter, and a control method of the phase shifter. The phase shifter includes a first base substrate; a plurality of microstrip lines arranged on the first base substrate and configured to transmit an electromagnetic wave signal and apply a common voltage; a dielectric layer arranged on a side of the plurality of microstrip lines away from the first base substrate; and a plurality of separate voltage control layers correspondingly arranged with the plurality of microstrip lines respectively on a side of the dielectric layer away from the first base substrate. The separate voltage control layers are configured to apply a control voltage. A dielectric constant of the dielectric layer varies with the control voltage applied to the voltage control layers and the common voltage applied to the microstrip lines.