The invention discloses an external blood stopping plug which comprises an outer sleeve (1) and an inner stopping plug body (2). The inner stopping plug body (2) is arranged in the outer sleeve (1). The outer sleeve (1) comprises a front end sleeve ring (3), a middle sleeve (4) and a rear end sleeve ring (5). The front end sleeve ring (3) and the rear end sleeve ring (5) are fixedly connected to the two ends of the middle sleeve (4) in a sleeving mode. The front end sleeve ring (3) is formed into a circular shape by connecting two semicircular rings in a butting mode. The rear end sleeve ring(5) is formed into a circular shape by connecting two semicircular rings in a butting mode. The middle sleeve (4) is formed into a cylindrical shape by connecting two semi-cylinders in a butting mode.The front end sleeve ring (3) is sleeved with a front end elastic sleeve ring (6). The rear end sleeve ring (5) is sleeved with a rear end elastic sleeve ring (7). In the technical scheme, blood is stopped by means of a blood stopping stent, a clear operation view is obtained, the structure is simple, and the stopping effect is good.