  Gauge coupling unification is studied in the MSSM with non-universal soft
supersymmetry breaking terms. If gaugino masses are sufficiently smaller than
scalar soft masses and the scalar soft masses have also certain types of
non-universality, gauge coupling unification scale can be larger than $3\times
10^{16}$~GeV even within the MSSM contents. String unification may not need a
large threshold correction or a large modulus value. We also discuss the
relation to the string model building.
