This　article　concerns　the　global　dynamics　of　a　continuous　planar　piecewise　linear　differential　system　with　three　zones.　We　give　global　phase　portraits　in　the　Poincare　disc　and　classify　bifurcation　diagrams　under　certain　parametric　conditions,　when　the　dynamics　of　central　linear　zone　is　anti-saddle.　Rich　dynamical　behaviors　are　demonstrated,　from　which　we　observe　homoclinic　loops　appearing　in　three　linear　zones　and　limit　cycles　occurring　in　three　linear　zones　which　surround　a　node　or　node-focus.