The invention discloses a device for pulling and separating a split plug (10). The device consists of a base (1), a ratchet sleeve (2), a central pivot (3), a fastener (4), a flat spiral spring (5), a turning wheel (6), a pin puller (7), a steel wire rope (8) and a collecting tube (9). When the split plug (10) is separated, the pin puller (7) acts to pull a pin, the turning wheel (6) is pushed to rotate under the action of the elasticity of the flat spiral spring (5) so as to pull the steel wire rope (8), the steel wire rope (8) acts on the split plug (10) to make the split plug (10) unlocked and retreat, the split plug (10) is finally fixed in the collecting tube (9), and the split plug (10) is pulled, separated and collected. The device realizes three functions of pulling and unlocking the split plug, recycling in a large travel and finally collecting and fixing, and has the advantages of large work margin, simple operation, high adaptability, safety, reliability and the like.