Abstract: This paper deals with the delamination behaviors and damage evolution modes of woven composites under quasi-static/cyclic loading. Mode II delamination propagation tests were conducted on twill woven CF3052/3238A carbon fiber/epoxy resin composites subjected to quasi-static/cyclic loading. Experimental results demonstrate that due to the latitudinal fiber bundles, a periodical retardation occurs during interlaminar delamination propagation accompanying with intralaminar debonding between latitudinal fiber bundles. Although the crack growth rate for mode II delamination of the twill woven CF3052/3238A carbon fiber/epoxy resin composites follows the Paris model, the variation law in fatigue driven force under load-control mode differs from that under displacement-control mode. That is, fatigue driven force changes parabolic monotonously under load-control mode, but wavily under displacement-control mode. Fatigue driven model is apt to characterize the damage evolution of the twill woven CF3052/3238A carbon fiber/epoxy resin composites under load-control and displacement-control modes. Good correlation is achieved between the proposed model and experimental results.