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Aiming at the application requirement of general inertial navigation system for tactical missiles, a signal synchronization acquisition and real-time processing hardware system based on fiber optic gyroscope and quartz accelerometer sensor is designed, and the scheme is designed, function division and index allocation for each sub module is completed, using the embedded hardware platform architecture of DSP+FPGA. The system achieved a three channel high precision analog-digital conversion from current to pulse frequency, achieved synchronous acquisition and real-time processing function of gyroscope and accelerometer sensitive carrier three-dimensional angular motion and line motion measurement signal, has the characteristics of miniaturization and strong versatility. The performance index and test result of the prototype meet the design requirements.