Life expectancy by an optical fiber screening test model shows that the main parameters affecting the life of the optical fiber are Weibull exponent m

stress corrosion susceptibility parameter nand the ratio of screening stress and static stress.This paper mainly focuses on the effects and determination of axial tension method and two-point bending method to the value of Nd

which is a key parameter to evaluate the fiber life.The values of Ndunder the two test methods for G.652 Dare statistically measured.The advantages and disadvantages of these two methods are also analyzed.Axial tension stretching method can find good fiber strength issue

but the implementation of optical fiber can be slippery.The bending method can well avoid fiber slippage problem

but it is difficult to find the strength of the optical fiber.Based on the above results

we suggest that both the test methods should be used in real application scenario.