The utility model discloses a construction scaffolding with self -locking function, detain including stand, horizontal pole, carousel, disc tray and bowl, the carousel cup joints on the top position of stand, evenly be provided with four mounting holes on the carousel, and all be provided with the locating hole between every mounting hole, the carousel is supported by setting disc tray on the position below the carousel, the welding has the connecting rod on the position of disc tray below, and the connecting rod installed bowl on carousel below position detain fix, horizontal pole one end is provided with the connector, and is provided with the screw thread on the connector of horizontal pole, mode detachable connections through the thread engagement between the connector of horizontal pole and the erection joint on the polarized plug, in the mounting hole of polarized plug joint on the carousel. The utility model discloses novel structure, simple to operate, stability is good, and the safety in utilization is high.