The utility model relates to the technical field of bathroom positioning mechanisms, in particular to a positioning mechanism with a quick mounting mechanism. According to the technical scheme, the device comprises an adsorption rail and a
shower head frame, the adsorption rail is of a T-shaped structure, wall-hanging suction cups are fixed to the back face of the adsorption rail at equal intervals, a lifting sliding block is slidably connected to the adsorption rail, the
shower head frame is fixed to the front side of the lifting sliding block, a rail groove is formed in the back face of the lifting sliding block, and a pair of positioning columns is installed on the inner side wall of the rail groove; a pair of side plates is installed on the side wall of the lifting sliding block, the outer sides of the side plates extend out of the lifting sliding block, transmission assemblies are arranged between the side plates and the positioning columns, and positioning grooves are formed in the adsorption rail at equal intervals. After the side plates are pressed, the height of the
shower head frame can be freely adjusted, a shower head can be conveniently and stably placed at different height positions in a shower room, practicability is improved, the wall-mounted suction cups are used for adsorption installation, operation is easy and convenient, and the installation positions can be switched according to actual requirements.