Hidden plug-in type connecting device for ALC partition boards on reverse ridge and mounting method of hidden plug-in type connecting device

The invention provides a hidden plug-in type connecting device for ALC partition boards on a reverse ridge and an installation method. The hidden plug-in type connecting device comprises an auxiliary mechanism, and the auxiliary mechanism is used for adjusting the ALC partition boards to be flush with the concrete reverse ridge; the connecting mechanism comprises notch mounting parts and I-shaped inserting parts matched with the notch mounting parts, the notch mounting parts are mounted at the top of the ALC partition wall board, the bottom of the ALC partition wall board, a concrete reverse ridge and a beam, and each I-shaped inserting part is inserted between every two adjacent notch mounting parts. According to the construction method, the installation procedure of the ALC partition wall board on the reverse ridge can be standardized and normalized, rapid installation of the ALC partition wall board is assisted, the construction efficiency is improved, and the defects that in the installation process in a