  A distributive lattice $L$ with minimum element $0$ is called decomposable if
$a$ and $b$ are not comparable elements in $L$ then there exist
$\overline{a},\overline{b}\in L$ such that $a=\overline{a}\vee(a\wedge b),
b=\overline{b}\vee(a\wedge b)$ and $\overline{a}\wedge \overline{b}=0$. The
main purpose of this paper is to study the structure of decomposable lattices
determined by their prime ideals. The properties for five special decomposable
lattices are derived.
