The present disclosure provides a dual-nuclear radio frequency (RF) coil device, including a first RF coil and a second RF coil. The first RF coil is a loop structure and includes at least one adjustment capacitor, the first RF coil is configured to generate a first magnetic field, and a direction of a primary magnetic field of the first magnetic field is a first direction. The second RF coil includes an electric dipole and a tuning and matching circuit connected between two conductors of the electric dipole. The second RF coil is configured to generate a second magnetic field and a direction of a primary magnetic field of the second magnetic field is a second direction； the electric dipole is disposed in a center line of the first RF coil and an insulating layer is disposed between the electric dipole and the first RF coil； and the first direction is perpendicular to the second direction. The present disclosure further provides a dual-nuclear RF coil array device.
