The invention discloses a relay protection setting value setting calculation architecture and method based on a cloud computing technology. The method comprises the steps that 1, when a power network running mode or a power network model is changed, data-intensive computational tasks are executed; 2, a user side judges whether a user operation belongs to the data-intensive computational tasks or not, if yes, firstly a database automatically searches for results, and if related computational results are searched out, the calculation process is stopped; if the related computational results are not searched out, user side submission tasks are automatically generated and submitted to a cloud, then the computational results are automatically and circularly searched out, and following calculation is completed; 3, after the cloud finds new task requests, the computational tasks are distributed dynamically and automatically according to load conditions of nodes of all servers; 4, related calculation programs are called by the nodes of the cloud servers with distributed tasks to conduct calculation according to distributed tasks, and calculated results are fed back; 5, analysis results of different servers are uniformly processed and sent to the user side by the cloud.