We present the latest results of the searches for new particles in
hadronic final states performed in ppbar collisions at sqrt s = 1.8 TeV.

The large data samples collected with the CDF and D0 detectors at the Tevatron
collider between 1992 and 1995 allow searches for low cross section phenomena
in dijet and multijet events, despite the hindrance of the high background
from normal QCD processes.  However, no signal for new physics is found, and
the data show good agreement with QCD.  Limits on the mass and on the cross
section of the searched states can thus be set.