  In supergravity models, the quantum correction to the vacuum energy can be of
order $M_I^4$, if the cutoff is of order the Planck mass $M^2_{P}$ and $Str\
{\cal M}^2\ne 0$. Therefore, the tree level cosmological constant must be
nonzero (probably negative). Since the current practice of calculating soft
parameters in supergravity models assumes the vanishing tree level cosmological
constant, the supergravity calculation must be accordingly modified. This
implies that the soft parameters in supergravity has an additional contribution
depending on the nonvanishing tree level cosmological constant. A simple
quantum mechanical model mimicking this situation is also presented.
