An embodiment of the utility model provides an equipment fixing device based on track, an equipment fixing device based on track, equipment fixing device based on track includes: two free stiff ends, connecting rod, instrument unable adjustment base, wherein, two free stiff ends are connected respectively at the connecting rod both ends for be fixed in on the two relative tracks, instrument unable adjustment base fixes on the connecting rod, is used for fixing orbital automatic monitoring facilities. Above -mentioned technical scheme has following beneficial effect: (1 )Guarantee that automatic monitoring system is used for subway engineering monitoring field under the circumstances of not destroying the ground iron construction, (2 )Structure rehabilitation expense (drilling is buried rehabilitation expense simplex journey underground and is varied for 10, 000-50, 000 yuan) has been reduced, (3 )Promote work efficiency, the mode of freely fixing is laid automatic measurement station and has been practiced thrift inbuilt time of drilling and the instrument time of demolising, has reduceed the improper personal security risk that arouses of tool operations such as electric drill.