The invention provides a method and system for collection, processing and storage of high-concurrency mass data and relates to the technical field of energy conservation.The method comprises the steps that a conversation request sent by a client is received; the conversation request is processed through a selector distribution thread registered in a link channel to establish a conversation with the client, whether the conversation is legal or not is judged, and if yes, load data monitored by the client is received; the load data is cached into multiple data blocks through a selector distribution thread registered in a data processing channel, and the load data in the data blocks is sent to a data storage channel and synchronized to other node databases; the load data sent by the data blocks is received through a selector distribution thread registered in the data storage channel, and the load data is written into a main database.Through the method and system, collection, processing and storage of the high-concurrency data at multiple nodes can be realized, and high performance and stability of the databases are guaranteed.