  This talk reviews the searches for sbottom and stop quarks at LEP. The
existing results of the four LEP experiments for sbottom and stop quarks
searches are summarized. Furthermore, new mass limits on stable hadronizing
squarks and gluinos are derived by combining Z-lineshape constraints with
direct searches for squarks and gluinos using ALEPH data. All limits are
derived in the framework of R-parity conserving models.
