In solid laser shock forming of corrugated diaphragm，there are several problems in central part of the diaphragm，such as producing reverse plastic deformation and even occurring fracture.To solve those problems，numerical simulation is applied to explore hollow laser shock forming of the diaphragm.Effect of hollow laser spot on diaphragm formability is researched through analyzing section contour and thickness distribution of the diaphragm after shock forming.The result shows that when conducting hollow laser shock forming of corrugated diaphragm，reverse plastic deformation in central part of the diaphragm can be effectively reduced by adopting appropriate inner diameter of hollow laser，which makes the diaphragm fit die more tightly.Thickness distribution of the diaphragm after shock forming can also be improved with appropriate inner diameter，which avoids facture in central part of the diaphragm as a result of severe thinning.