YOFC panda type polarizationmaintaining passive double-cladding fibre, using advanced PCVD process to deposit core and stress rod, has accurate refractive index distribution and excellent geometric and birefringent properties. Combined with special coating with a low refractive index, high NA (numerical aperture > 0.46) double-cladding transmission is realized. Meanwhile, large mode field diameter ensures good connection performance with other passive double-cladding fibres, and perfectly matches PM ytterbium-doped fibre, which is very beneficial to ultrafast laser processing and reducing high pulse nonlinear effect.