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A framework for community vegetable shop to manage the transaction information and trace products was created. In this system, information acquisition was carried out based on barcode traceability electronic scale. The management core of the system was the database of transaction information. A mobile was used as the barcode scanner for tracing. The barcode traceability electronic scale integrated related models to achieve many functions, such as weighting, authentication, label printing and data uploading. To build the transaction management and traceability system of community vegetable shops, the electronic scale’s data transaction and analysis were carried out, and the mobile’s recognition technology of 2-D code which contained multiple pieces of information was improved. By building the simulation environment, the data transmission stability of multiple electronic scales, which were connected with the computer at the same time and the traceability function by scanning 2-D code with a mobile, was tested. The results show that the transmission success rates are above 99% by either real-time transmission or centralized transmission. With the increase of products number in one label, there is a decline in both recognition speed and recognition success rate of different pixel mobile phones. Meanwhile, the mobile phone with 8 million pixels has obvious advantages in recognition speed.