The regulation mechanism of wetland plants in response to consecutive drought (D) and reflooding (RT) events can be identified via nutrient responses. Nutrient responses of Carex schmidtii were tested using a simulation experiment with five treatments: D, wetting (W) and RT resulted in C. schmidtii being re-flooded after 30, 40 and 60 days of drought. D and RT treatments partly affected nutrient stoichiometry of C. schmidtii. Plant nutrient stoichiometry experienced a shift of adaption from drought to flooding and making part or full recoveries after RT with reference to D and W treatments. Plant P concentration had a negative relationship with N:K ratio. D and RT effects on plant trade-offs and scaling exponents of C. schmidtii were profound; the scaling exponent of P similar to N increased with initial re- flooding time, while that of K similar to N decreased. Although nutrient trade-offs in D gradually differed from W and RT over time, the nutrient trade-offs of RT recovered with reference to W. The D and RT were recorded to contribute to nutrient flexibility of C. schmidtii; however, strong internal stability of stoichiometric relationships effectively relieved changes in plant nutrient stoichiometry. The findings aid our understanding of nutrient responses of C. schmidtii to D and RT.