The work aims to put forward suggestions for industrial development by analyzing the development trends and characteristics of the patents for bag packaging technology in the past thirty years at home and abroad. The patents for bag packaging technology from 1985 to 2015 were searched with Incopat database. Method of patent analysis was adopted to interpret the patent application tendency, country distribution and so on in the field of bag packaging technology and analyze the patent development characteristics of major applicants at home and abroad and grasp the regional distribution of Chinese applicants. In contrast with the gentle development trend abroad, numbers of patent applications for the bag packaging technology were developing rapidly in China. Although the top ten applicants for patent were foreign enterprises, the advantage was not obvious in China. In some branches of the bag packaging technology, Chinese enterprises had been the top 10 already. For the above, based on the analysis, the enhancement of technical strength and market competitiveness of Chinese enterprises requires the government to guild financial support and promote the establishment of industry alliances.