The utility model relates to a scraper conveyor chain rupture monitoring devices. Including put in a skylight the middle part groove (1) and with this put in a skylight the middle part groove (1) complex picture peg (2), its characteristics are: picture peg (2) upward open flutedly, and demountable installation has pickup assembly (10) on this recess, and permanent magnet (5) are installed including shell (9) in this pickup assembly (10) in this shell (9), and this permanent magnet (5) are connected with the one end of magnetic conduction stick (6), and the other end of this magnetic conduction stick (6) is connected with hall element (7), and the output of this hall element (7) is connected with the binding post on the shell (9). It is proved in experiments tha, the utility model provides a scraper conveyor chain rupture monitoring devices can accurate emergence of monitoring scraper conveyor chain rupture accident to in time shutting down and overhauing, the chain link time is shortened simultaneously in the expansion of avoid accident, improve equipment's utilization ratio.