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 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, wherein the matching unit comprises: a first matching module, an input end of which is electrically connected with the electromagnetic generating module; a fixed value inductor, connected in series between an output end of the first matching module and the radiating assembly; characterized in that a second matching module, an input end of which is connected between the output end of the first matching module and the inductor, and an output end of which is grounded, wherein the first matching module and the second matching module respectively comprise a plurality of branches, wherein each branch of the first matching module comprises a fixed value capacitor and a switch connected in series and, each branch of the second matching module comprises a fixed value capacitor and a switch connected in series. an electromagnetic generating module, configured to generate an electromagnetic wave signal; a radiating assembly, comprising one or more radiating units 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, wherein the matching unit comprises: a first matching module, an input end of which is electrically connected with the electromagnetic generating module; a fixed value inductor, connected in series between an output end of the first matching module and the radiating assembly; characterized in that a second matching module, an input end of which is connected between the output end of the first matching module and the inductor, and an output end of which is grounded, wherein the first matching module and the second matching module respectively comprise a plurality of branches, wherein each branch of the first matching module comprises a fixed value capacitor and a switch connected in series and, each branch of the second matching module comprises a fixed value capacitor and a switch connected in series. a first matching module, an input end of which is electrically connected with the electromagnetic generating module; a fixed value inductor, connected in series between an output end of the first matching module and the radiating assembly; characterized in that a second matching module, an input end of which is connected between the output end of the first matching module and the inductor, and an output end of which is grounded, wherein the first matching module and the second matching module respectively comprise a plurality of branches, wherein each branch of the first matching module comprises a fixed value capacitor and a switch connected in series and, each branch of the second matching module comprises a fixed value capacitor and a switch connected in series.