Photovoltaic self-locking connector

The invention discloses a photovoltaic self-locking connector which comprises a male plug, a female plug, a male plug contact pin and a female plug contact pin. The male plug comprises a male plug insulation shell, the male plug insulation shell is provided with a male plug inner cavity, a plug, a connecting buckle, male plug external threads and male plug locking columns, and a male plug nut is arranged the male plug external threads in a matched mode. The female plug comprises a female plug insulation shell, the female plug insulation shell is provided with a female plug inner cavity, a plug barrel, a connecting clamping groove, female plug external threads and female plug locking columns, and a female plug nut is arranged on the female plug external threads in a matched mode. A male plug back stopping spring barrel is arranged in the male plug inner cavity, and a female plug back stopping spring barrel is arranged in the female plug inner cavity. The male plug contact pin penetrates through the male plug spring barrel, and the female plug contact pin penetrates through the female plug spring barrel. The photovoltaic self-locking connector has the advantage of being high in reliability.