The invention provides a high-concurrency service scene processing method and system and a storage medium. The system comprises a current limiting subsystem, a cache inventory query subsystem, a real inventory query subsystem, an order subsystem, a payment subsystem and a real inventory processing subsystem. Comprising the following steps: reasonably dividing a high-concurrency service according to a service process; dividing the whole business process into a plurality of subsystems, where each subsystem independently completes own business; and after the self service is completed, calling a subsystem of a service process, so that the whole service process is completed. Each subsystem is small in service processing amount, short in response time and high in processing speed, the concurrency amount of an instantaneous high-concurrency service scene is increased through cooperative operation of the subsystems, and the user experience is good. Moreover, the subsystems are relatively independent, the fault tolerance of the system is improved, when one subsystem is changed, the use of other subsystems is not affected, and the system is applied to different scenes and is high in flexibility and applicability.