The invention discloses a team or group operation system, which comprises four function modules: a team or group module, a work region module, a leader module and a manager module, and the four module structures divided by the team or group operation system disclosed by the invention provide a middle layer integrated framework for meeting application requirements on low cost, high usability, high reliability and expandability. A unified development platform is provided, the cost and the complexity for developing the multilayer application are reduced by using J2EE, simultaneously, strong support is provided for the existing application program integration, the Enterprise Java Beans is completely supported, good guide support packing and deployment application are realized, the directory support is added, the safety mechanism is enhanced, and the performance is improved.