Abstract: To study the effect of the coalbed bedding orientation on the fracturing effect during the cyclical infusion of liquid CO₂, the non-metallic ultrasonic detector and low-field NMR spectrometer were used to study the degree of damage and pore development of different liquid CO₂ injection. The results show that coal seam bedding has a certain degree of influence on the freeze-thaw damage mode and internal pore development of coal. The bedding orientation firstly affects the crack initiation position of the coal body, and then affects its failure mode and pore expansion, extension, and connectivity. With the increase of cycle numbers of injecting liquid CO₂, the cracks caused by frost heave expansion and contraction of the coal surface gradually increase. The original pores in the coal increase and produce new ones, and different bedding azimuth effect is different.