The collection of testing samples is the basis of food safety testing and supervision. Using a hand-held sampling encoder, a complete information chain of sample source data can be established. All information including file details and signatures are automatically uploaded to the supervision platform, and the sample code label with traceable QR code is automatically generated and printed on the machine to ensure the legal compliance of the whole process of sample collection. The instrument adopts a lightweight, hand-held design, which is easy to carry and fully meets the needs of the sampling process with high work mobility.