The invention provides a protection processing method and device, a storage medium and an electronic device. The method comprises the following steps: detecting that a predetermined parameter in an optical interference phenomenon corresponding to a predetermined optical fiber is changed; determining a target object in an area where the predetermined optical fiber is arranged as an illegal invaderbased on the change value of the predetermined parameter; and performing protection processing on the illegal invader. According to the invention, the target object in the area where the predeterminedoptical fiber is arranged is determined to be the illegal invader based on the change of the predetermined parameter in the light interference phenomenon corresponding to the predetermined optical fiber, and the protection processing is executed on the illegal invader. Therefore, the problem that the illegal invader protection processing accuracy is not high can be solved, and the effect of improving the illegal invader protection processing accuracy is achieved.