The invention discloses a cloud service node architecture in a self-service tourism system, and a service collaborating and balancing module and a service collaborating and balancing method among service nodes in the self-service tourism system, relates to the cloud service node architecture, and the service collaborating and balancing module and the service collaborating and balancing method among the service nodes, and aims to meet the requirement of self-service tourism. According to the architecture, the module and the method, a MapReduce idea is used for service collaborating and load balancing of a self-service tourism cloud service system; when arriving at the service nodes, a user service request is split and scheduled by the system; the arrived service request is regarded as a big task, and the big task can be split into a plurality of small tasks; therefore, the small tasks are regarded as objects in the load balancing process, so that the parallel processing capacity of the system is improved; and the architecture, the module and the method are applied to the self-service tourism system.