The invention discloses a fastener flexible automatic production line and production method and relates to the technical field of production lines. The fastener flexible automatic production line comprises a plurality of double-spindle lathes, conveying devices, vibration feeding devices, labeling detection units and package sealing units. The double-spindle lathes are arranged in parallel at intervals. One end of each double-spindle lathe is provided with a feeding platform, and the other end of each double-spindle lathe is provided with a lathe discharge port. The conveying devices are parallel to the arrangement direction of the double-spindle lathes, get close to the corresponding lathe discharge ports and extent to feed ports of the vibration feeding devices. The labeling detection units are arranged at discharge ports of the vibration feeding devices. The package sealing units are arranged close to the corresponding labeling detection units. The production line is high in flexibility and suitable for production of small batches and various types of fasteners, improves the production efficiency, detection speed and product quality and reduces the manual labor and production cost.