An embedded multi-core hollow high birefringence fiber is designed and fabricated. Since the structure of the optical fiber core and the cladding is geometric asymmetric, it has high birefringence characteristic which can be used to overcome the problems of the polarization-induced fading of the fiber integrated interferometer. Using the finite element method to analyze the mode birefringence changes in different sizes, it can be concluded that increasing the length of the major axis of the core, or reducing the thickness of the inner cladding can effectively improve the birefringence. And the mode birefringence of 1.42×10-4 at 1310 nm is obtained. Experimental and analytical results show that the embedded multi-core hollow high birefringence fiber has a certain potential in in-fiber integrated interferometers for reducing polarization-induced fading and can be used to manufacture in-fiber integrated interferometer with polarization-maintaining function.