A transverse electromagnetic mode dielectric filter , comprising: a resonator , a dielectric body , and a metal housing , wherein - an outer surface of the dielectric body is covered with a conductive material, the metal housing is fastened above the dielectric body , and there is a gap between the metal housing and the dielectric body ; - the resonator comprises a resonant plate and a resonant hole , wherein the resonant plate is disposed on a top surface of the dielectric body , the resonant hole is a hollow cylindrical structure with openings on upper and lower ends, an upper opening of the resonant hole is provided on the resonant plate , a lower opening of the resonant hole is provided on a lower surface of the dielectric body , an inner surface of the resonant hole is covered with a conductive material, and the resonant plate is of a metal material; and - the filter further comprises a near-end rejection structure , wherein the near-end rejection structure is inside the dielectric body , and a shape, a location, and a size of the near-end rejection structure are configured according to a frequency of a signal that the filter is to filter out; - the near-end rejection structure is a near high-frequency end-rejection structure or a near low-frequency end-rejection structure; - the near-end rejection structure has at least two ends in contact with the lower surface of the dielectric body , and a remaining part of the near-end rejection structure is within a magnetic field area inside the dielectric body or the near-end rejection structure is within an electric field area inside the dielectric body ; and - the near-end rejection structure is any one of a metalized through hole, a metalized strip line, a physical metal structure, a metalized conductor, or a thin metal piece. - an outer surface of the dielectric body is covered with a conductive material, the metal housing is fastened above the dielectric body , and there is a gap between the metal housing and the dielectric body ; - the resonator comprises a resonant plate and a resonant hole , wherein the resonant plate is disposed on a top surface of the dielectric body , the resonant hole is a hollow cylindrical structure with openings on upper and lower ends, an upper opening of the resonant hole is provided on the resonant plate , a lower opening of the resonant hole is provided on a lower surface of the dielectric body , an inner surface of the resonant hole is covered with a conductive material, and the resonant plate is of a metal material; and - the filter further comprises a near-end rejection structure , wherein the near-end rejection structure is inside the dielectric body , and a shape, a location, and a size of the near-end rejection structure are configured according to a frequency of a signal that the filter is to filter out; - the near-end rejection structure is a near high-frequency end-rejection structure or a near low-frequency end-rejection structure; - the near-end rejection structure has at least two ends in contact with the lower surface of the dielectric body , and a remaining part of the near-end rejection structure is within a magnetic field area inside the dielectric body or the near-end rejection structure is within an electric field area inside the dielectric body ; and - the near-end rejection structure is any one of a metalized through hole, a metalized strip line, a physical metal structure, a metalized conductor, or a thin metal piece. <EOS>