Abstract: In this article, the current production file, code layout and description way of origin place have been analyzed in detail, it was proposed to investigate safe and traceable technology which was fit to the actual situation for fresh vegetables. Here the way to combine national regional code (administrative village level) was adopted as the main part of place geocoding, and this 15 digits code fixed the present puzzle of validation, generalization and specification of coding pattern. Subsequently, the digitization and graphically for spatial characters and related attribute information of place environment integrated with geocoding were achieved. Furthermore, this study designed a new specification of production file for producing, packaging and distribution of fresh vegetables reference to GAP. Finally, on the basis of place geocoding and production information, a system for safe producing management and product tracking of fresh vegetables was developed with Flex, WebGIS and Webservices technology. In a case study, the place geocoding was printed as tracking tag, and the traceability among planting land, vegetable store, distribution units and consumers was figured out reliably．

Key words: WebGIS, geocoding, production file, traceability