The invention discloses a rotary pluggable photoelectric combined connector used in deep sea. The connector includes a plug and a socket which are matched with each other, and the plug includes a plugshell body, a plug elastic capsule body, a plug web, a plug tail plate and a plurality of plug photoelectric insertion cores; the socket comprises a socket shell body, a socket elastic capsule body,a socket web, a socket tail plate, a plurality of socket photoelectric insertion cores and a movable cavity; the connector is also provided with rotary mechanisms capable of covering/uncovering channels cooperating with the socket photoelectric insertion cores and the plug photoelectric insertion cores, and a locking mechanism is arranged between the front end of the plug and the front end of thesocket. The rotary pluggable photoelectric combined connector can adapt to working environments different in depth, and is reliable in sealing, simple to operate and small in required strength for plugging and pulling.