The state data of rocket in flight is an important content to evaluate its flight performance. Aiming at the collection and storage of various sensor data during rocket flight, a collection system is designed. In the aspect of system hardware design, modular design is adopted, and stm32h753 chip of arm Cortex-M series is used as the control core, and AD7606 chip of 16 bit high-speed ADC is used to ensure the efficiency of the system, the synchronous performance of the system is improved by using switch sampling control chip ADG1206. Finally, the NANDFLASH chip MTFC32GAKAECN-4M is used to ensure the system storage. In terms of software design, the scheme of A / D conversion and DMA transmission is adopted to ensure the correct data acquisition, effective transmission and stable storage. Finally, in the system test, the analog voltage signal is input to simulate various sensor data during the rocket flight, and the collection and storage experiments are carried out. The collection accuracy, stability and storage performance of the system are calculated and analyzed, and the reliability and correctness of the system are verified.