  Very recently, the {\it BABAR} Collaboration indicated that there exist an
explicit enhancement structure near 2.2 GeV when focusing on the
$e^+e^-\to\pi^+\pi^-$ process again, which inspires our interest in studying
the production of higher $\rho$ mesonic states. Since the branching ratio of
$\pi^+\pi^-$ channel of $D-$wave $\rho$ states are much smaller than $S-$wave
states, we choose $\rho(1900)$ and $\rho(2150)$ as the intermediate states in
$e^+e^-\to\pi^+\pi^-$, where $\rho(1900)$ and $\rho(2150)$ are treated as
$\rho(3S)$ and $\rho(4S)$ states, respectively. Our result indicates that the
$BABAR$'s data of $e^+e^-\to\pi^+\pi^-$ around 2 GeV can be depicted well,
which shows that this enhancement structure near 2.2 GeV existing in
$e^+e^-\to\pi^+\pi^-$ can be due to the contribution from two $\rho$ mesons,
$\rho(1900)$ and $\rho(2150)$. Additionally, this conclusion can be enforced by
the consistence of the extracted values of
$\Gamma_{e^+e^-}\mathcal{B}(\pi^+\pi^-)$ of $\rho(1900)$ and $\rho(2150)$ in
the whole fitting processes and the corresponding theoretical calculations. The
present study of $e^+e^-\to\pi^+\pi^-$ data may provide valuable information to
establish the $\rho$ meson family.
