The invention discloses a chip integrated all-optical phase modulation method and system based on optical Kerr effect and a storage medium. The method comprises: injecting high-power X-band driving light into a certain transmission waveguide segment at a chip integrated optical path; triggering a non-linear optical Kerr effect by the driving light and changing an effective refractive index of thetransmission waveguide; and affecting Y-band signal light transmitted in the waveguide by the effective refractive index change and causing the phase change to realize light field regulation. According to the invention, the transmission loss and mechanical vulnerability characteristic caused by the special structure and the potential safety hazard caused by the external voltage are reduced; the signal light is not affected obviously; direct processing and preparation are performed by one exposure etching process; the additional loss introduced by the driving light is negligible; and the signallight is located at the single photon opportunity. The quantum interferometer using the above structure has approximately same transmission losses of all arms; and the interference contrast is expected to be close to the ideal value.