The invention discloses a portable rapid air cooling belt connection machine. The machine is provided with an upper beam and a lower beam and is characterized in that a heating plate and a metal flat plate are sequentially arranged at the bottom of the upper beam from top to bottom, a metal flat plate, a heating plate and a heat insulation plate are sequentially arranged on the top of the lower beam from top to bottom, a belt is heated, pressurized and connected between the metal flat plate of the upper beam and the metal flat plate of the lower beam, and an air bag for pressurizing is arranged at the position, below the heat insulation plate, in the lower beam; a draught fan for cooling is arranged at the position, above the heat insulation plate, in the upper beam. The belt connection machine can meet machining physical characteristics and process requirements of various belts, a machined belt is flat and attractive, no obvious connecting marks exist on the connecting position, attractiveness and strength of belt products are improved, and the whole connection machine is compact in structure, small in size, stable in work and convenient to use.