The invention provides a high birefringence dung beetle-shaped core photonic crystal fiber. The high birefringence dung beetle-shaped core photonic crystal fiber comprises a cladding layer, wherein the cladding layer is circular air holes arranged in a regular hexagonal lattice, a core is embedded inside the cladding layer, the high birefringence dung beetle-shaped core photonic crystal fiber is characterized in that the core comprises two central air holes arranged laterally, two air hole straight arms arranged laterally and four air hole spiral arms arranged longitudinally. The high birefringence dung beetle-shaped core photonic crystal fiber is advantaged in that the provided terahertz fiber is in the frequency range of 1.6-2.7 THz, the achieved birefringence change range is from 0.039to 0.061, limiting loss of X and Y polarization states is between 1.6 THz and 2.7 THz, which is lower than 0.0099 dB/cm and 0.042 dB/cm respectively.