Abstract: A collaborative method and its implementation system for a trust-based business community, enables a business person, who behaves as a function of a corporation, to invite his/her business partners to form a trust-based business community. Through this method and system, the business person can create, conduct and commit/abort a collaborative activity with their business partners to achieve a business objective. This method and system are also defined as a participation mechanism, which effectively addresses the mixed situations of competition and collaboration. Based on legal-binding invitation and principle of good faith, the system can support the establishment of such a TBC, thus providing a good collaboration platform for the companies to do business effectively and efficiently in today's business world.