Abstract: A collapsible cabinet includes a front frame, two side panels, a rear panel, a bottom panel, at least one inner panel and a top panel. The front frame has multiple mounting blocks and multiple fastening pins. The rear panel has multiple mounting blocks and multiple fastening pins. The side panels are connected to the front frame and the rear panel with multiple connecting buckles. The bottom panel is mounted on the mounting blocks and is positioned with multiple mounting pins. The at least one inner panel is mounted on the bottom panel and has multiple fastening pins. The top panel engages the fastening pins of the front frame, the rear panel and the at least one inner panel. Thus, the collapsible cabinet can be assembled and detached easily without tools and does not be damaged after repeatedly assembling and detaching. Transporting and storing costs are also lowered.