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The problem of miniaturization, integration and high accuracy of the laser gyro strapdown inertial navigation system is badly to be solved in military and civil engineering. Aiming at solving this problem, a miniaturized integrated control scheme for three mechanically dithered laser gyros is presented to achieve the function of dither control, cavity length control, stable current control, signal detection and pulse counting with one single circuit board, which is designed and implemented based on DSP and FPGA. Experimental results show that the proposed miniaturized integrated control circuit board can accomplish the automatic concurrent control of three gyros both precisely and stably with the advantage of flexible and convenient parameter adjustment. The proposed miniaturized integrated control circuit can improve the precision of the gyros, which lays the foundation for the high precision and miniaturization of the laser gyro strapdown inertial navigation system. It has been applied in many projects and has high practical value.