To determine the packaging quality stability of paper-packaging machines (HNQ) for Chinese dried noodles based on the key technology improvement, and to meet demands from noodle industries to packaging stability and efficiency, the production lines of a dried noodles manufacturing industry were sampled for investigation. The packaging effects of two kinds of packaging machines (HNQ and SDH) and four same machines in a line were for each kind were tested and analyzed. The results showed that no significant difference in the instant weight of packaged noodles between the SDH packaging machines was found. The differences of coefficient variation (CV%) among four HNQ packaging machines were small, and this indicated the relatively high packaging stability for weighting of the two kinds of packaging machines (HNQ and SDH). In addition, compared to SDH packaging machines, each packaged noodle from HNQ packaging machines displayed smaller coefficient variation (CV%) of perimeter, and this confirmed the HNQ packaging machines with stabled perimeter. For four HNQ packaging machines, dried noodles from HNQ₂, HNQ₃, and HNQ₄ packaging machines had lower perimeter variance and similar tightness, which were similar with those of SDH₁, SDH₂, and SDH₃. The surface sensory evaluation of packaged dried noodles from HNQ packaging machines was obviously better than that of SDH packaging machine. Weight, perimeter, appearance, as well as sensory scores could be used as the main evaluation parameters for packaging results of paper-packaging machines. Improvements such as wrapping techniques and sealing devices have significantly enhanced packaging result and stability of automatic paper-packaging machines for Chinese dried noodles.