The utility model discloses a mine man-car connecting device. The device comprises a front connecting frame, a rear connecting frame, a bolt and a safety pin, the front connecting frame comprises a connecting plate, a sliding block and an elastic buffering mechanism. a rectangular opening is formed in the connecting plate; a sliding rail is arranged on the rectangular opening in the front-back direction. The two sides of the sliding block are in sliding fit with the sliding rails. the elastic buffer mechanisms are fixed at the front and rear ends of the slider; a first through hole is formed in the center of the sliding block, a second through hole and a third through hole are formed in the rear connecting frame, the plug pin is inserted into the first through hole, the second through holeand the third through hole to connect the front connecting frame with the rear connecting frame, a safety hole is formed in the lower end of the plug pin, the safety pin comprises a head and a rod, and the rod is bent into an arc shape. And through buffering of the elastic buffering device, a certain buffering effect is achieved when people and vehicles are started and braked, driving is more stable, and passengers are prevented from being injured. And the safety pin is arc-shaped and has the effect of preventing separation, so that the driving safety is further enhanced.