  We study the scalar condensation of a general holographic superconductor
model in AdS black hole background away from the probe limit. We find the model
parameters together with the scalar mass and backreaction can determine the
order of phase transitions completely. In addition, we observe two types of
discontinuities of the scalar operator in the case of first order phase
transitions. We analyze in detail the effects of the scalar mass and
backreaction on the formation of discontinuities and arrive at an approximate
relation between the threshold model parameters. Furthermore, we obtain
superconductor solutions corresponding to higher energy states and examine the
stability of these superconductor solutions.
