A located super remote all optical fiber boundary safety guarding system solution based on Φ-optical time domain interference technology is proposed. Utilizing the interference mechanism of Φ-optical time domain reflectometer, the intervention occurs in the Rayleigh sacttering lights, which are reflected from the different parts of optical fiber. Meanwhile, the multi-stage optical repeating amplification sensing device is embedded among the multi-section sensing optical cables of the distributed optical fiber sensor, utilizing the gain of repeating amplification sensing device to overcome the optical fiber loss and to enhance the intensity of spontaneous Rayleigh scattering lights in optical fiber, and measuring the sensing optical cable by sections and time sharing. When N remote optical repeating amplification sensing devices being introduced among the multi-section sensing optical cables are cascaded, the systerm can bring the N×L (L is the length of each section sensing optical fiber) super remote monitoring of distributed optical fiber sensor.