Z and Heavy Flavor Production in p+p and Pb+Pb Collisions with the ATLAS Detector

Using the ATLAS detector in 2011 with 35pb-1 data, the J/Psi, bbbar, ttbar and Z productions are measured from 7TeV p+p Collisions, where results are compared with different MC models predictions. The J/Psi and Z productions from heavy iron pb+pb 2.76TeV with 6.7ub-1 data also are discussed, where clear J/Psi production suppression observed at low centrality region.