The invention discloses an e-commerce service system and an implementation method thereof, belonging to the field of e-commerce. The invention also relates to an e-commerce service system for providing O2O (online to offline) to physical store merchants, in particular to an e-commerce industrial system. The e-commerce service system comprises a commerce service provider, an intelligent terminal equipment module, a commerce data uniform interface module, a commerce data general implementation module, a commerce data customization service implementation module and a commerce data storage module, wherein the intelligent terminal equipment module is connected with the commerce data uniform interface module through a wired and wireless modes; the commerce data uniform interface module, the commerce data general implementation module, the commerce data customization service implementation module and the commerce data storage module are respectively connected with and mutually cooperated with a commerce information database through a wired manner. The system is scientific, feasible, and low in setting up and maintaining cost, and conforms to the requirements of e-commerce brand software established by small and medium commerce service.