The invention discloses an ocean engineering structure monitoring device capable of resisting large impact force. The ocean engineering structure monitoring device comprises a monitoring equipment body, a support is welded to the center of the front face of the top of the monitoring equipment body, a camera is embedded in the top of the front face of the support, and display screens are sequentially embedded in the top of the front face of the monitoring equipment body from left to right. According to the ocean engineering structure monitoring device capable of resisting the large impact force, through cooperation of a first sliding groove, a positioning groove, a threaded cylinder, a threaded rod, a rotating disc, a handle, a moving seat, a first sliding block and a positioning rod, a fixing frame and a reinforcing seat can be positioned and stabilized, so that the monitoring equipment body is reinforced through a mounting seat, and the monitoring equipment body and the mounting seat are prevented from being broken and falling off due to stress; and through cooperation of a sliding groove frame, a second sliding groove, a second sliding block and an elastic ring, the two sides of the center of an anti-collision plate can be elastically buffered, and through cooperation of a fixing cylinder, an elastic material, a sliding base and a sliding rod, the periphery of the anti-collision plate can be elastically buffered.