The invention discloses a rotary anti-unplugging structure of a charging interface, which can prevent the abnormal charging termination caused by unplugging by mistake. The rotary anti-unplugging structure comprises a plug and a socket, wherein the circumferential surface of the connection end of a socket shell is provided with at least one spiral groove, the end part of a plug shell is provided with a movable sleeve, the circumferential surface of the inner wall of the movable sleeve is provided with ball bearings, and the inner end surface of the movable sleeve is provided with a standstilllocking hole; a standstill locking pin, a rocker, a support and a slide connected with the support are arranged in the plug shell, the inner wall of the plug shell is provided with a standstill locking groove, the standstill locking pin is arranged in the standstill locking groove and is connected with the support, and inner end of the slide is provided with a drive hole; and one end of the rocker extends into the drive hole, the middle part of the rocker is movably arranged on a pin shaft on the inner wall of the plug shell, a press key penetrates in the plug shell, and the pressing end of the press key extends into the plug shell and abuts against the other end of the rocker. The invention is mainly applied to the charging interface for charging battery jars.