Based on the theory of vacuum system, a vacuum adsorption conveyer of bag-package was designed. The mathematical model between the reasonable area and the key structural parameters was established to study the parameterized design of the device. The mechanical model about dynamical absorption transmission device was established and its influencing factors were determined. The results showed that the belt speed and vacuum degree were the main influencing factors for the dynamic adsorption conveying characteristics. At a constant vacuum hole spacing d, as the vacuum hole radius r reduced, the vacuum degree was easier to form, but the vacuum adsorption force became small, which was not conducive to the adsorption conveying and bag opening. At a constant vacuum hole radius r, a properly reduced spacing d was beneficial to increase the vacuum adsorption force. In conclusion, the use of reasonable technical parameters of vacuum adsorption conveying for plastic bags had its necessity.