Abstract: A collapsible barbecue grill includes a tray-like ash/grease catcher having a predetermined depth. The ash/grease catcher is provided at a bottom surface with a pair of wheeled collapsible legs and locating means, along two lateral walls of its top surface with two outward bent edges to provide two supporting frames, and along a rear wall of its top surface with an inward bent edge to provide a baffle, such that a cooking grid having front hooks is removably positioned on and between the two supporting frames and below the baffle. The ash/grease catcher is also provided at an outer front surface with a handle, and near middle points of outer surfaces of its two lateral walls with two bar receivers for a suspension grid set to detachably mount thereto.