Under normal circumstances, when designing FIBCs, the first choice is to clarify the weight of the loaded goods, and measure the volume of FIBCs based on the proportion of the packaged materials. It also depends on whether the loaded material is sharp and hard block material. If it is, the base fabric should be thicker when designing the FIBC, on the contrary it can be thinner. In the actual design, the base fabric is generally selected (150-170) G/m2 for the bulk bag with a load of 500kg, the longitudinal and transverse tensile strength of the base fabric is (1470-1700) N/5cm, and the elongation is 20-35%. Container bags with a load of more than 1000kg. The base fabric is generally selected (170~210)G/m2, the longitudinal and transverse tensile strength of the base fabric is (1700-2000)N/5cm, and the elongation is 20~35%