The present invention relates to a debuggable radiation unit and an antenna. The debuggable radiation unit comprises: a vibrator body comprising a base, multiple pairs of feed baluns, and multiple dipoles, the multiple pairs of feed baluns being symmetrically provided around a central axis of the base; each pair of feed baluns being connected to one dipole; each dipole comprising a vibrator arm comprising a radiation surface; multiple insulating dielectric layers, each of the insulating dielectric layers being detachably connected to one vibrator arm and at least partially covering the radiation surface; and multiple coupling load members, each of the coupling load members being detachably connected to one insulating dielectric layer and at least partially covering one side where the insulating dielectric layer is far from the radiation surface so as to be coupled into a radiation arm with the vibrator arm. The debuggable radiation unit can be selectively disposed on the coupling load members on the vibrator body to serve as the radiation arms of the debuggable radiation unit with the vibrator arms, and can also adjust a circuit. Coupling load members in different shapes can be freely disassembled according to different requirements to achieve different effects.