The invention provides a method for memory fragmentation management. The method comprises the steps that, memory space is distributed according to a memory distribution request during system running; a memory fragmentation degree is calculated, whether a calculation results exceeds a preset threshold is judged; and if the memory fragmentation degree exceeds the preset threshold, memory fragments can be searched and sorted. The method provided by the invention is characterized in that the memory fragments are searched and sorted based on the memory distribution in combination with the memory fragmentation degree, so that a utilization rate of the memory space is increased; the memory fragmentation is effectively reduced; and memory running stability is enhanced.