The invention provides a terminal out-of-communication resistance control method and device and a related device. The execution process of the terminal out-of-communication resistance control method comprises steps of notifying a control terminal and performs a corresponding response based on first authorization selection information returned by the control terminal, wherein the first authorization selection information comprises: choosing to really cut off communication connection or choosing to pretend to cut off the communication connection. The terminal out-of-communication resistance control method and device and related device leave control power of the communication connection between the mobile terminal and the external world to the control terminal. In a practical application scene, the control terminal can be a wearable device, like an intelligent watch and an intelligent bracelet which all belong to a terminal user. The intelligent watch and the intelligent bracket determine whether the operation like starting up and turning off can be truly executed and the mobile terminal can be maintained in a communication state in an emergency, which provide a condition to find a lost mobile terminal.