  After the first quasi-periodic eruptions (QPEs, GSN069) was reported in 2019,
four other sources have been identified as QPEs or its candidate. However, the
physics behind QPEs is still unclear so far, though several models have been
proposed. Pan et al. (2022) proposed an instability model for the accretion
disk with magnetically driven outflows in the first QPEs GSN 069, which is able
to reproduce both the light curve and the evolution of spectrum fairly well. In
this work, we exploit this model to all the QPEs. We imporve the calculations
of the spectrum of disk by introducing a hardening factor, which is caused by
the deviation of opacity from the blackbody. We find that the light curves and
evolution of the spectra of the four QPEs or candidate can all be well
reproduced by our model calculations.
