The invention discloses a system and a method for judging and locking a shipping space in air freight. Configuration data stored in a rule configuration module and a matching algorithm of a shipping space analysis module jointly form a calculation model for locking shipping space data analysis; and the shipping space analysis module starts to traverse from a first rule, analyzes whether the currently traversed rule is matched by combining the calculation parameters, enters the rule if the currently traversed rule is matched, locates corresponding data, returns a data result to an interface module or an input module to be displayed, jumps out of the rule if the currently traversed rule is not matched , and continues to traverse to the next rule. In the invention, a user or an external system only needs to input relevant parameters, the system can automatically carry out recognition and calculation, feed back the loadable shipping space of an airplane, load locked shipping space data andenable the locked shipping space not to load goods and luggage, shipping space loading information is prevented from being reported or input mistakenly, and transportation safety is guaranteed.