The invention discloses a portable and multi-purpose liquid food feeding device for nursing of an intensive care unit. The portable and multi-purpose liquid food feeding device comprises a stable frame and a food storage container, wherein a water storage tank with the same specification is arranged on the right side of the food storage container, the food storage container and the water storage tank are connected to a pressurizer, the pressurizer comprises a pressurizing air-blowing bag, a double-opening air pipe arranged in the food storage container and the water storage tank is connected to the upper end of the pressurizing air-blowing bag, air control valves are arranged on the left and right sides of the double-opening air pipe, an injector is connected to the upper end of the jointof a food eduction tube and a water guide pipe, the joints of the injector with the food eduction tube and the water guide pipe are connected by connecting hoses, an inlet fixing assembly is connectedto the left end of the injector, a connecting pipe is connected to the left end of the inlet fixing assembly, and a conveying stomach tube is connected to the left end of the connecting pipe. With the portable and multi-purpose liquid food feeding device for nursing of the intensive care unit, the problems that the traditional liquid food feeding device and the stomach tube are separated, thus the whole device can not be carried conveniently, meanwhile, after the stomach tube is used for a long time, blockage occurs easily, or during washing, the detaching is difficult, are solved.