Abstract: The present invention provides a cervical traction mechanism having a weight seat used to provide the weight force required for cervical traction. A weight adjustor is used to preset a weight force required for cervical traction as a sign of alarming. A pulling brake unit includes a pulley assembly, stay cord and traction belt joint, with one end of said pulley assembly linked to the brake unit connection end of the weight seat. A cervical traction belt has one end linked to the traction belt joint of the pulling brake unit. An alarming portion is set onto a preset location of the weight seat. When the spring weight of the weight seat reaches the weight force set by the operator, a signal is sent by the alarming portion. The cervical traction mechanism improves safety and applicability and makes it possible to avoid misoperation and recurrent damage to the patients.