The invention discloses an automatic assembling machine of an invisible zipper head. The automatic assembling machine has the following characteristics: the structure is simple, the automation degree is high, the assembling quality of a part can be automatically identified, and the automatic running of the assembling machine can be regulated as well as controlled so as to increase the assembling efficiency and ensure stable as well as reliable product quality. The automatic assembling machine solves the technical problems in the prior art that the product quality is poor and the production efficiency is low due to that the assembling automation degree of the zipper head is low and the assembling quality can only be manually identified. The automatic assembling machine comprises a machine seat. An assembling disc connected with a power device is horizontally arranged on a tabletop of the machine seat, and an assembling mould used for fixing a pull head is arranged on the assembling disc. A charging mechanism used for assembling the zipper head, a riveting mechanism and a discharging mechanism are arranged on the machine seat. The charging mechanism comprises a pull head feeding mechanism, a spring feeding mechanism, a triangular feeding mechanism, a hook feeding mechanism and a copper pin feeding mechanism which are respectively connected with a vibrating disc. A detecting control mechanism is arranged between the charging mechanism and the riveting mechanism.