The invention discloses an intelligent monitoring and alarming device for settlement of an internal support scaffold, and relates to the technical field of construction safety. The intelligent settlement monitoring and alarming device for the internal support scaffold comprises a reader, a cover plate, a fixing frame, a fixing bottom plate, a screw cap, a screw rod, a pendant and a fixing suspension wire, and further comprises an annular trigger switch, a spiral cable, a lithium battery type audible and visual integrated alarm and a wireless transmitter. The intelligent settlement monitoring and alarming device for the internal support scaffold is novel in design, simple in structure, easy in installation and easy in use; in a construction process, patrol inspection is realized, long-distance observation is realized through a telescope, and remote monitoring can be carried out through a mobile phone APP and computer software; when the scaffold sinks abnormally or the sinking amount reaches an alarm value, the device can automatically carry out double reminding of lamplight flickering alarm and remote wireless alarm; the device is also suitable for construction at night; and safetyand quality accidents caused by untimely scaffold settlement monitoring are made up.