  A qualitative analysis of the chiral phase transition in QCD with two
massless quarks and non--zero baryon density is performed. It is assumed that
at zero baryonic density, $\rho=0$, the temperature phase transition is of the
second order. Due to a specific power dependence of baryon masses on the chiral
condensate the phase transition becomes of the first order at the temperature
$T=T_{\mathrm{ph}}(\rho)$ for $\rho>0$. At temperatures
$T_{\mathrm{cont}}(\rho) > T > T_{\mathrm{ph}}(\rho)$ there is a mixed phase
consisting of the quark phase (stable) and the hadron phase (unstable). At the
temperature $T = T_{\mathrm{cont}}(\rho)$ the system experiences a continuous
transition to the pure chirally symmetric phase.
