In order to creat the micro droplets with higher precision for the biochemistry, a new kind of micro droplet manufacturing system is presented in this paper. It is composed of the drive component (the linear ultrasonic motor and the controller), the micro droplet generation component (the syringe and the silicone hose,the glass micro hole), the signal generator and amplifier and the micro droplet separation (the bending vibration block and the unilateral clamped beam). Utilizing the drive controller to drive the linear ultrasonic motor, the motor pushes forward the syringe and the micro droplet is produced at the micro hole tip. The generated micro dropolet is separated from the micro hole tip by making use of the vibration of the vibration block and the displacement amplification role of the clamped beam to overcome the cohesive force The linear ultrasonic motor with high precision is adopted as the drive component in the system. The method of producing micro droplets is studied. The experiments show that the micro droplets with a diameter of below 2 μm are generated.