The invention relates to a packaging part with double-row pins and four flat and pin-free surfaces and a production method thereof. The packaging part comprises a lead frame carrier, an IC chip, a bonding pad, inner lead pins, bonding lines and a plastic packaging body and is characterized in that the inner lead pins are arranged into two rows, i.e. the inner lead pin (4) and the inner lead pin (5), each pair of lead pins are connected together, a groove is arranged in the middle of the connected pins, the bonding pads are respectively connected with the inner lead pin (4) and the inner lead pin (5) through the bonding lines, an anti-spilling groove is arranged at the bottom of the carrier, and grooves are arranged at the bottoms of the inner lead pins. The packaging part is processed and produced through the processes of reduction, scribing, chip installation, press welding, plastic packaging, electroplating, cutting and the like. The carrier is diminished, the inner lead pins are inwards extended and designed into double rows, and the packaged I/O number is increased, thereby not only markedly saving the cost of plastic packaging materials, but also realizing the thin and miniaturized packaging of portable products, being suitable for multi-pin high-density packaging, and improving the packaging density.