Effects of cluster correlations on fragments emission in 12C+12C at 50 MeV/u are studied with the antisymmetrized molecular dynamics(AMD)and an extended version of AMD,which has introduced cluster correlation based on the original AMD version(AMD-cluster).For the simulations,AMD model contains no effects of cluster correlations.The experimental data are well reproduced by the AMD-cluster calculations for light charged particles with Z2(LCPs).The angle distributions of isotopes with Z>2(IMFs)are reproduced reasonably well by the AMD-cluster calculations.But the yields of 8B,10Be,10C and 12C do not improve.