Suspension connecting device and construction method thereof

The invention provides a suspension connecting device which is characterized in that a plurality of inhaul cables are arranged on a roof at intervals, a suspended ceiling is provided with a plurality of unit blocks, the suspension connecting device is connected to two adjacent unit blocks and the inhaul cables, and the suspension connecting device comprises a connecting rod, wherein one end of the connecting rod is fixedly connected away from the end part of each inhaul cable away from the roof; a fixing plate which is rotationally connected to the end, away from the inhaul cable, of the connecting rod, wherein the two ends of the fixing plate are fixedly connected to the two adjacent unit blocks, so that the unit blocks are spliced to form a suspended ceiling, and the suspended ceiling is supported on the side wall; and a brake part which is fixedly connected to the fixing plate and detachably connected with the connecting rod, wherein the connecting rod is rotationally adjusted to tension the inhaul cables,