At present, though construction of national level food safety traceability system is like a raging fire, it still has certain limitation. Because of technical restriction and disperse supervision, local traceability platform can not resolve the cross-regional circulation problem of agricultural products. Department of a single industry can not resolve the whole-process tracing and management problem of agricultural products “from farm to dining table”. National level food safety traceability system has been approved in the beginning of this year, which is under preliminary design stage and is expected to be completed and put into use by the end of 2017.