  The Schwarzschild-de Sitter (SdS) black hole solution, which has two event
horizons, is considered to examine the relation between the quasi-localized
energy complexes on ${\cal M}$ and the heat flows passing through its boundary
$\partial {\cal M}$. Here ${\cal M}$ is the patch between cosmological event
horizon and black hole event horizon of the SdS black hole solution.
Conclusively, the relation, like the Legendre transformation, between the
quasi-localized Einstein and M{\o}ller energy complex and the heat flows
passing through the boundary is obeyed, and these two quasi-localized energy
complexes could be corresponding to thermodynamic potentials.
