In this paper, we  are concerned with the minimal regularity of both the density and the velocity for the weak solutions keeping energy equality

in the isentropic compressible Navier-Stokes equations. The energy equality criteria without upper bound of the density  are established  for the first time. Our results imply that the lower integrability of the density $\rho$ means that more integrability of  the velocity $v$ or the gradient  of the velocity  $\nabla v$ are necessary for energy conservation of the  isentropic compressible fluid and the inverse is also true.