In this paper, the tearing properties of the inflatable tube with coated fabrics were investigated. Firstly, uniaxial tensile, shear, and single-edge notched tests were conducted to obtain the material properties. Then, considering the modified stress field model and bulge effect, a theoretical calculation formula for the critical tearing pressure was proposed. Next, based on finite element method, the macroscopic orthotropic elastic continuum models of the single-edge notched test and pressurized cylinder test were established. In numerical model, when the average stress in the critical distance at the crack tip reached the tensile strength, the tearing began. Then, the critical distance was determined when the critical tearing load of the numerical model was closest to the single- edge notched tests' result. Based on the numerical simulation of pressurized cylinder test, the critical tearing pressure of inflatable tube was obtained. Finally, the pressurized cylinder test and puncturing test were designed and conducted. In the pressurized cylinder test, when the first yarn at the crack tip broke, the critical tearing pressure and configuration around the crack were obtained. Moreover, the correctness of the critical tearing pressure in theoretical calculation formula and numerical model was verified through pressurized cylinder test. In puncturing test of inflatable tube, there were obvious crack expansion and explosion. Based on the theoretical calculation formula for the critical tearing pressure, the predicted results were consistent with puncturing test's results.