These files are data used in the paper "Nonlinear responses of droughts over China to volcanic eruptions at different drought phases", which is published on the Geophysical Research Letters (GRL). The uploaded data are simulations from volcanic sensitivity experiments, with volcanic eruptions added in the "late-" and "early-" phases of each of the 15 drought events, respectively. The sensitivity experiments are performed using the Community Earth System Model (CESM) version 1.0.3. The compressed file "data.zip" is comprised of 4 sub-files containing variables of precipitation (prect), 500hPa vertical speed (Omega), East Asia Summer Monsoon index (EASM index), and soil moisture, respectively. In each sub-file, there are 6 txt datasets. Among the 6 ".txt" files, three of them are precipitation(EASM/Omega/Soil Moisture) anomalies centered with volcanic eruptions taking place in the late-phase of the 15 drought events (late-) in the CTRLs (with suffix "ctrl.txt"), volcanic sensitivity experiments with respect to the climatology (with suffix "vol.txt"), and volcanic sensitivity experiments with respect to the CTRLs (with suffix "vol-ctrl.txt"). Another three ".txt" files are simulations with volcanic eruptions taking place in the early-phase of the 15 drought events (early-). Each ".txt" file contains 15 time series, and each time series is 21 years' long, with 10 years before and 10 years after the volcanic eruption.