Coding method for tracing vegetables and coding system used by same

The invention discloses a coding system for tracing vegetables and a corresponding method for tracing the vegetables. The coding method comprises the following steps of: A. generating a 8-bit enterprise identification code of vegetable production enterprises; B. generating a 3-bit lot information code; C. generating a 5-bit product information code of the vegetables according to a product classification code of the vegetables; D. generating a 6-bit production date code of the vegetables according to the picking dates of the vegetables; E. generating a 3-bit quantity key for controlling the identifying, reading and printing frequencies of the batch of vegetable traceable codes according to the package quantity of the vegetables and the generation sequence of the traceable codes; F. generating a 1-bit check code of the vegetables; G. sequentially combining the generated 8-bit enterprise identification code, 3-bit lot information code, 5-bit product information code, 6-bit production date code, 3-bit quantity ke