Slide rail capable of being quickly disassembled and assembled

The sliding rail comprises a fixed rail body, a lower bead frame, a movable rail body, expansion colloidal particles and a rotating rod, the expansion colloidal particles are fixed to mounting holes, each expansion colloidal particle comprises expansion parts and spacing seams, and the spacing seams are formed between the expansion parts; a shifting piece is arranged on the rotating rod, the rotating rod rotates by shifting the shifting piece, the rotating rod is inserted into the expansion colloidal particle through the mounting hole, a convex block is arranged on the rotating rod, and when the rotating rod is inserted into the expansion colloidal particle, the convex block is located in the expansion colloidal particle; when the sliding rail is installed, firstly, the expansion colloidal particles are inserted into the installation holes in the cabinet body, then the poking pieces are poked from the first working position to the second working position, the protrusions are made to rotate to the positions of