This paper designed a kind of low cost missile-born data recorder based on nand flash memory AT25DF641.The recorder used a memory array of five pieces of AT25DF641and operated them alternately.By optimizing the processes of data sampling and storage,the recorder performances a max speed of 980kbitls for recording.Using devices with small outline packages to Minimize the dimension of the recorder.Some anti-jamming method was also applied to the recorder,such as encapsulation of the PCB board,individual sector protection,global protection and separate connection of the control pins.Proved by ball cartridge shot test,the recorder achieves an average speed of 800kbitls and well satisfies the desire.