Abstract: To study the differences in calculated risk values based on measured concentrations of trichlorethylene in the soil gas versus the Johnson-Ettinger Dual-Equilibrium Desorption (JE-DED) model and the J&E model. Through studying the effects of 8 adsorbents belonging to 3 categories (MOFs, Carbon materials, and molecular sieve) on the adsorption of trichloroethylene, MIL-101 was selected from UIO-66, ZIF-8, MOF-801, spherical activated carbon, graphic electrode, HiSiv1000 and HiSiv3000 to adsorb and determine the content of trichloroethylene in soil gas. Results of risk assessment based on trichloroethylene concentration measured in soil gas were compared with the results based on the calculation of J&E and JE-DED models. The results showed that for the fluvo-aquic soil from Beijing and Heilongjiang black soil, the risk value calculated by J&E was two orders of magnitude higher than the risk value calculated based on the measured vapor concentration of trichlorethylene in the soil gas. For the fluvo-aquic soil from Beijing with lower organic matter content, the calculated risk value of trichlorethylene in soil gas was one order of magnitude lower than that calculated by JE-DED model. However, for the Heilongjiang black soil with high organic matter content, the calculated risk value of JE-DED model was closer to the risk value calculated based on the measured concentration of trichlorethylene in the soil gas. Therefore, it was concluded that the risks based on the VOCs concentrations in soil gas and that based on the calculation of JE-DED model can avoid the problem of overly conservative in J&E model, and objectively reflect the pollution states of the site and avoid over-remediation, as well as the waste of resources.