Abstract: With rapid development of China′s economy，QR code as a new technology has been well developed，at the same time，many businessmen began to use QR code technology to sell fake agricultural products，adulteration，fraud.Therefore，it is necessary to design a safe and convenient QR code to ensure quality and safety of agricultural products.The application of SHA-1 encryption technology and Reed-Solomon error correction technology in traceability QR code can effectively improve security of traceability process of agricultural products，reduce probability of key information being stolen and tampered，improve consumers′ confidence in agricultural products，and provide certain help for rapid traceability of agricultural products.