Detachable building settlement mark

The utility model relates to a settlement observation device, and discloses a detachable building settlement mark which comprises a settlement mark body, a sleeve assembly and a screw assembly, the settlement mark body is detachably connected with the screw assembly, and the screw assembly is suitable for being embedded into a building through the sleeve assembly. And the screw rod assembly is detachably connected with the sleeve assembly. According to the utility model, the settlement mark is detachably connected with the screw assembly, the sleeve assembly is detachably arranged on the screw assembly, and the sleeve assembly is embedded into the building, so that the screw assembly can be firmly fixed on the building through the sleeve assembly, and the change of the structure can be directly reflected; the stability of a monitoring point and the accuracy of a measured result are ensured; besides, the screw assembly can be taken out from the sleeve assembly, so that the screw assembly and the settlement mar