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The motor driven mute electric bolt is locked and unlocked by the activity of the bolt which is driven by the stepping motor. The stepping motor has great strength, the powerful thrust of the stepping motor can be used to push the bolt to align the door to achieve the purpose of locking when the door is deformed or skewed. All parts are made of metal material, the mechanical structure of inserting and resetting has been treated with noise reduction. The two Hall components on the PCB board can accurately locate and control the stretch out and draw back of the bolt, so that unlocking and locking can be muted. Compared with the traditional electric bolt using solenoid valve structure, when the product enters the locking and unlocking state, there is no need to power the motor continuously, low energy consumption and environmental protection. The lock can also be customized with an emergency unlocking module (external), it can be unlocked automatically in case of sudden power failure.