This paper proposes a pre-allocated buffer management mechanisms Index. Based on the idea of memory pre-allocation, the mechanism supports static and dynamic allocation and backup allocation. The mechanism is proved, and make it better adapt to the small data report distribution and management. At the same time, a study of the dynamic recovery has been done and proposed a strategy for the associated-release of dynamic recovery propose of maximum allocation of just by once to achieve the release of a strategy. Problem of memory link is solved by avoiding repeatedly memory allocate and recovery. Through the analysis and comparison,performance index mechanism of message handing capacity, high efficiency and reliable.