The application relates to a rule-based middle platform sharing method, which comprises the following steps: when the order of a settled-in merchant is completed, if a sharing period is met, a sharing event is pushed to a sharing middle platform by a
system, the middle platform matches order information with trigger conditions of all sharing rules, if the matching is successful, corresponding sharing rules are triggered, and the matched successful sharing rules are processed; pre-sharing is performed, the
system obtains the roles and specific merchants of sharing parties from the order information; the pre-sharing total amount of each sharing party is obtained by adding the amount of money that each sharing party should obtain; whether the pre-sharing amount of the sharing party meets a settlement period is judged, if yes, automatic settlement is judged, and the settlement is completed; the application realizes that the order of a merchant can automatically select different sharing rules according to different sharing parties, automatically perform sharing, flexibly set a sharing mode, and automatically perform re-sharing of a refund process, reduces manual operation, and greatly improves sharing efficiency.