The utility model discloses a linkage device of a fin machine and an assembly machine for assembling an automobile air conditioner condenser. The assembly line comprises a fin machine, a conveying rail, an assembly machine A and an assembly machine B, wherein a discharge port of the fin machine is respectively connected with feed ports of the assembly machine A and the assembly machine B through aconveying track; the conveying rail is composed of a guide rail section, an arc-shaped flow dividing section connected to the tail end of the guide rail section and a conveying belt section connectedto the tail end of the arc-shaped flow dividing section, an air nozzle A and an air nozzle B which are used for blowing fins into the arc-shaped flow dividing section and the conveying belt section are installed on the guide rail section, and the air nozzle A and the air nozzle B are connected with a high-pressure air source through a three-position switching module. According to the utility model, one high-speed fin machine is linked with two semi-automatic assembly machines at the same time, so that the fin machine and the assembly machines exert the due efficiency, and meanwhile, the semi-automatic assembly machines have the advantages of high production efficiency, low price and short development period.