An electromagnetic wave generating system, comprising: an electromagnetic generating module, configured to generate an electromagnetic wave signal; a radiating assembly, comprising one or more radiating units and configured to be electrically connected with the electromagnetic generating module to generate electromagnetic waves of a corresponding frequency according to the electromagnetic wave signal; and a matching unit, connected in series between the electromagnetic generating module and the radiating assembly, and configured to adjust a load impedance of the electromagnetic generating module; the matching unit being characterised by: a first matching module, comprising a plurality of fixed value inductors connected between the electromagnetic generating module and the radiating assembly, and a plurality of branches, wherein each branch of the first matching module comprises a fixed value capacitor and a switch connected in series; and input ends of the plurality of branches of the first matching module are respectively connected between two adjacent inductors and between an end inductor and the radiating assembly, and output ends of the plurality of branches of the first matching module are grounded, wherein the matching unit is further characterised by: a second matching module, connected in series between the electromagnetic generating module and the first matching module; and the second matching module comprising a plurality of parallel branches. an electromagnetic generating module, configured to generate an electromagnetic wave signal; a radiating assembly, comprising one or more radiating units and configured to be electrically connected with the electromagnetic generating module to generate electromagnetic waves of a corresponding frequency according to the electromagnetic wave signal; and a matching unit, connected in series between the electromagnetic generating module and the radiating assembly, and configured to adjust a load impedance of the electromagnetic generating module; the matching unit being characterised by: a first matching module, comprising a plurality of fixed value inductors connected between the electromagnetic generating module and the radiating assembly, and a plurality of branches, wherein each branch of the first matching module comprises a fixed value capacitor and a switch connected in series; and input ends of the plurality of branches of the first matching module are respectively connected between two adjacent inductors and between an end inductor and the radiating assembly, and output ends of the plurality of branches of the first matching module are grounded, wherein the matching unit is further characterised by: a second matching module, connected in series between the electromagnetic generating module and the first matching module; and the second matching module comprising a plurality of parallel branches. a first matching module, comprising a plurality of fixed value inductors connected between the electromagnetic generating module and the radiating assembly, and a plurality of branches, wherein each branch of the first matching module comprises a fixed value capacitor and a switch connected in series; and input ends of the plurality of branches of the first matching module are respectively connected between two adjacent inductors and between an end inductor and the radiating assembly, and output ends of the plurality of branches of the first matching module are grounded, wherein the matching unit is further characterised by: a second matching module, connected in series between the electromagnetic generating module and the first matching module; and the second matching module comprising a plurality of parallel branches. a second matching module, connected in series between the electromagnetic generating module and the first matching module; and the second matching module comprising a plurality of parallel branches.