Using the Abaqus finite-element software，a finite-element drilling simulation model for a CFRP/Ti stack composite was established.The three-dimensional Hashin failure criterion was coded into a VUMAT subroutine and used as the damage criterion for the CFRP laminate.The axial force and strain evolution during drilling of the CFRP/Ti stack composite with a YG8 cemented-carbide drill were analyzed.The effects of cutting speed， feed per revolution，and drill point angle on drilling-induced defects in the CFRP/Ti stack structure were further investigated， and drilling experiments were conducted for validation.The simulation and experimental results show that a spindle speed of 750 r/min，a feed of 0.025 mm/r，and a drill point angle of 140° produce the best entry quality on the CFRP side.Under conditions of low speed，low feed and a large point angle，the axial force is smaller and the hole quality in the stack is higher.Standard rake angle drill are not suitable for machining such laminates.