The invention belongs to the field of solar thermal utilization, and particularly relates to a disc type energy storage system for generating power by using light, heat and sound. The system comprisesa disc type reflector, a heat and sound compressor, compressed air energy storage devices, a work applying device and a generator. The disc type reflector gathers sunlight to a driving side of the heat and sound compressor, the heat and sound compressor is driven to work to compress a gas medium, then the compressed gas medium is stored in the compressed air energy storage devices, and when powergeneration is required, compared gas in the devices is used for driving the work applying device so as to drive the generator to generate power. On the basis of maintaining high efficiency of the disc type system, the shortcoming that the conventional disc type stirling engine has difficulty in energy storage is overcome. In addition, light gathering and heat collecting subsystems of the system do not have movable components, requirements can be configured according to actual system capacity, the light gathering and heat collecting subsystems run in series or in parallel, and the flexibilityof the system is high.