The invention brings forward an electro-optical reconnaissance mast flange end face linkage locking mechanism. The mechanism is composed of a mast flange and a storage bucket. Open holes are arrangedin the side wall of storage bucket in a circumferential direction, and a large transition plate is installed at the position of the perforation. The large transition plate is provided with locking guide hole, a fixed connecting plate, a lower suspension coupling wheel of the coupling plate and a connecting roller of the coupling wheel. The roller structure is matched with a guide rail pressing block, the guide rail pressing block comprises a pressing block and an arc-shaped guide rail, the pressing block extends into a locking guide hole, the arc-shaped guide rail is divided into an outer arcsection and an inner arc section, and the roller of the roller structure extends between the outer arc section and the inner arc section; As that couple wheel rotates, the roll structure can drive the outer arc section or the inner arc section to move, thereby realizing the expansion and contraction of the press block in the locking guide hole. The invention has simple structure and can be operated in a vehicle without the personnel going up to the roof of the vehicle. The invention is a linkage mechanism, which can be operated once to complete locking and unlocking, and saves time; The guiderail press block adopts multi-section and multi-angle design, which can realize fast locking and unlocking, high pressure and reliable locking.