Embodiments of the present invention provide a method and system for processing hot topic message. The method includes: receiving, by an interface machine, a read request for a message, and determining whether the interface machine has buffered the message and whether buffering duration of the message does not exceed preset valid duration; feeding back, if the message has been buffered and the buffering duration of the message does not exceed the preset valid duration, the message that the interface machine has buffered; and determining, if the message has been buffered but the buffering duration of the message exceeds the preset valid duration or the message is not buffered, whether the message is a hot topic message, and retrieving, if the message is a hot topic message, the hot topic message from a storage machine, buffering the hot topic message, recording a buffering moment, and feeding back the hot topic message.
