The invention discloses a quickly-folded trolley. The quickly-folded trolley comprises a trolley body, wheels and a push rod, wherein the trolley body comprises a horizontally arranged trolley frame and a stop frame mounted at the front end of the trolley frame; the front part of the trolley frame is erected on a connecting shaft between the two wheels in front of the trolley body; each of two sides of the rear end of the trolley frame is hinged to a sleeve, each sleeve sleeves an upright tube on the corresponding side and can move up and down along the corresponding upright tube, and a knob capable of locking the position of each sleeve on the corresponding upright tube is mounted on the corresponding sleeve; the lower parts of the two upright tubes are connected through a polished shaft, and the two ends of the polished shaft are located below the sleeves; slideways are respectively arranged on two sides of the trolley body, and a slide bar is mounted in each slideway; each slide bar is connected with one end of a crank, and the other ends of the cranks are hinged to the polished shaft; a first limited block is mounted at the lower part of each of the left side and the right side of the trolley frame, a positioning pin is mounted on each first limited block, and each positioning pin is connected with a first limited block switching handle through a brake cable. The quickly-folded trolley can be in various carrying modes and is suitable for carrying goods of different shapes and weights.