Abstract: Computation formulas for fabric surface energy,such as Owens with 2 liquids and with 3 liquids,Neumann,Forkes and Van Oss methods,were used widely in the world.However,it is found by the research that they all have some limitations in practical use.When the fabric surface energy is more than 20 mJ/m2,all the 5 formulas are applicable,but if the surface energy is less than 20 mJ/m2,it is better to choose Neumann formula for computation.