  The first test of the Kugo-Ojima colour confinement criterion by the lattice
Landau gauge QCD simulation is performed. The parameter u which is expected to
be -1\delta^a_b in the continuum theory was found to be -0.7\delta^a_b in the
strong coupling region. The data is analyzed in connection with the theory of
Zwanziger. In the weak coupling region, the expectation value of the horizon
function is negative or consistent to 0.
