A heating method, comprising: controlling a heating unit to operate to heat an object to be processed; if a heating suspension condition is met, recording a current heating parameter of the heating unit, and controlling the heating unit to stop operating; and if a heating continuation condition is met, controlling the heating unit to continue operating according to the recorded heating parameter; characterized in that the heating unit comprises an electromagnetic wave generation module for generating an electromagnetic wave signal, a cavity capacitor for accommodating the object to be processed, and an impedance matching module connected in series between the electromagnetic wave generation module and the cavity capacitor or in parallel at both ends of the cavity capacitor; prior to the step of controlling the heating unit to operate, the heating method further comprises: adjusting the configuration of the impedance matching module to reduce a reflected wave power returning to the electromagnetic wave generation module; and determining an initial heating parameter of the heating unit based on the configuration of the impedance matching module, wherein the initial heating parameter comprises at least one of heating power, and a termination threshold for terminating a heating procedure; the determining an initial heating parameter of the heating unit based on the configuration of the impedance matching module includes: controlling the electromagnetic wave generation module to generate an electromagnetic wave signal with a preset initial power; adjusting the configuration of the matching module, and determining the configuration of the impedance matching module that achieves a minimum reflected wave power; determining, according to the configuration of the impedance matching module that achieves the minimum reflected wave power, the initial heating parameter. controlling a heating unit to operate to heat an object to be processed; if a heating suspension condition is met, recording a current heating parameter of the heating unit, and controlling the heating unit to stop operating; and if a heating continuation condition is met, controlling the heating unit to continue operating according to the recorded heating parameter; characterized in that the heating unit comprises an electromagnetic wave generation module for generating an electromagnetic wave signal, a cavity capacitor for accommodating the object to be processed, and an impedance matching module connected in series between the electromagnetic wave generation module and the cavity capacitor or in parallel at both ends of the cavity capacitor; prior to the step of controlling the heating unit to operate, the heating method further comprises: adjusting the configuration of the impedance matching module to reduce a reflected wave power returning to the electromagnetic wave generation module; and determining an initial heating parameter of the heating unit based on the configuration of the impedance matching module, wherein the initial heating parameter comprises at least one of heating power, and a termination threshold for terminating a heating procedure; the determining an initial heating parameter of the heating unit based on the configuration of the impedance matching module includes: controlling the electromagnetic wave generation module to generate an electromagnetic wave signal with a preset initial power; adjusting the configuration of the matching module, and determining the configuration of the impedance matching module that achieves a minimum reflected wave power; determining, according to the configuration of the impedance matching module that achieves the minimum reflected wave power, the initial heating parameter. adjusting the configuration of the impedance matching module to reduce a reflected wave power returning to the electromagnetic wave generation module; and determining an initial heating parameter of the heating unit based on the configuration of the impedance matching module, wherein the initial heating parameter comprises at least one of heating power, and a termination threshold for terminating a heating procedure; the determining an initial heating parameter of the heating unit based on the configuration of the impedance matching module includes: controlling the electromagnetic wave generation module to generate an electromagnetic wave signal with a preset initial power; adjusting the configuration of the matching module, and determining the configuration of the impedance matching module that achieves a minimum reflected wave power; determining, according to the configuration of the impedance matching module that achieves the minimum reflected wave power, the initial heating parameter. controlling the electromagnetic wave generation module to generate an electromagnetic wave signal with a preset initial power; adjusting the configuration of the matching module, and determining the configuration of the impedance matching module that achieves a minimum reflected wave power; determining, according to the configuration of the impedance matching module that achieves the minimum reflected wave power, the initial heating parameter.