  The covariant tensor formulae for partial wave analysis of $\psi
\rightarrow\Delta\bar{\Delta}$, $\Delta \to p \pi^\pm$, $\bar{\Delta} \to
\bar{p} \pi^\mp$ are derived, as well as the formulae for the decay sequence of
$\psi \rightarrow N^* \bar{p}$, $N^* \to \Delta \pi^\mp$, $\Delta \to p \pi^\pm
$. These formulae are practical for the experiments measuring $\psi$ decaying
into $p \bar{p} \pi^+ \pi^-$ final states, such as BESIII with its recently
collected huge $J/\psi$ and $\psi(2S)$ data samples.
