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In order to realize the measurement and control of relevant parameters of free piston Stirling refrigerator, a measurement and control system based on HCS12 Embedded Microcontroller is developed. MC9S12DG256 Embedded Microcontroller is used in the measurement and control system, and suitable sensors are selected to measure the parameters of pressure, temperature, voltage and current. The PC machine is used as the host computer, and the human-machine conversation window is designed by using Kingview software. In order to ensure the safe and reliable operation of the refrigerator, the back EMF control strategy is used to realize the travel control of the linear motor of the refrigerator, and the fast refrigeration and temperature PID control strategy are used to realize the temperature control of the cold end of the refrigerator. Its experience can be applied to other similar measurement and control systems.