A dielectric phase shifting module comprising: a dielectric device (6 and 6') into which an interlayer space is formed; a first and second conductors (41, 42), at least a portion of them being disposed side by side into the interlayer space; and a third conductor located outside of the interlayer space; the first conductor has an end, the second conductor has an end at a same side of the end of the first conductor, and the third conductor has a first end connected to the end of the first conductor and a second end serving as an output end of the dielectric phase shifting device; another end of the first conductor is defined as an input end, while another end of the second conductor and the second end of the third conductor are all defined as output ends; the dielectric device (6 and 6') is configured to slide relatively to the first, second and third conductors (41, 42, 43) along a longitudinal direction of the first and second conductors (41, 42) under external force so as to cause a length modification L of the portion of the first and second conductors (41, 42) being disposed in the interlayer space, and in this way change phase of signals fed in from the input end and fed out from the output ends; a middle portion of the third conductor is connected with the end of the second conductor such that a T-shape is defined collectively by the second and third conductors, said middle portion forms a connection point between the third conductor and second conductor, and said connection point between the third conductor and second conductor also forms a two-way power divider; the dielectric phase shifting module is configured such that a length modification L of the portion of the first and second conductors (41, 42) being disposed in the interlayer space creates a first phase difference Δ θ at the second end of the third conductor and a second phase difference being the double of the first phase difference at the output end of the second conductor, Δ θ being proportional to the length modification L; and the dielectric device (6 and 6') is of an integral component. a dielectric device (6 and 6') into which an interlayer space is formed; a first and second conductors (41, 42), at least a portion of them being disposed side by side into the interlayer space; and a third conductor located outside of the interlayer space; the first conductor has an end, the second conductor has an end at a same side of the end of the first conductor, and the third conductor has a first end connected to the end of the first conductor and a second end serving as an output end of the dielectric phase shifting device; another end of the first conductor is defined as an input end, while another end of the second conductor and the second end of the third conductor are all defined as output ends; the dielectric device (6 and 6') is configured to slide relatively to the first, second and third conductors (41, 42, 43) along a longitudinal direction of the first and second conductors (41, 42) under external force so as to cause a length modification L of the portion of the first and second conductors (41, 42) being disposed in the interlayer space, and in this way change phase of signals fed in from the input end and fed out from the output ends; a middle portion of the third conductor is connected with the end of the second conductor such that a T-shape is defined collectively by the second and third conductors, said middle portion forms a connection point between the third conductor and second conductor, and said connection point between the third conductor and second conductor also forms a two-way power divider; the dielectric phase shifting module is configured such that a length modification L of the portion of the first and second conductors (41, 42) being disposed in the interlayer space creates a first phase difference Δ θ at the second end of the third conductor and a second phase difference being the double of the first phase difference at the output end of the second conductor, Δ θ being proportional to the length modification L; and the dielectric device (6 and 6') is of an integral component.