The invention discloses an electric cooking device and a heating control device thereof. The heating control device comprises M resonance modules, a power supply module, M switching tubes and a drive control module; each resonance module comprises a resonance capacitor, N coil panel assemblies and a selective switch unit, the N coil panel assemblies are connected in parallel through the selective switch unit, and the selective switch unit is used for controlling at least one of the N coil panel assemblies to work, wherein M and N are integers greater than 1; the power supply module is used for supplying power to the M resonance modules; the M switching tubes correspond to the M resonance modules; the drive control module is used for controlling at least one of the M switching tubes to be connected for work. Thus, M*N coil panel assemblies just need M resonance capacitors and M switching tubes, circuit structures and wires of the coil panel assemblies are simplified, the selective switch units do not need to frequently switched, the service life of the switch is prolonged, the noise generated in the switching process of the switches is lowered, and the user experience is improved.