  In this paper, we use the new version of Gedanken experiment to investigate
the weak cosmic censorship conjecture(WCCC) for RN-AdS black holes surrounded
by quintessence. The process of matter fields falling into the black hole can
be regarded as a dynamic process. Based on the stability condition and the null
energy condition, the first-order and second-order perturbation inequalities
are derived. Finally, these results show that the WCCC for RN-AdS black holes
surrounded by quintessence cannot be violated under the second-order
approximation of matter fields perturbation.
