A method for controlling valve timing of continuous variable valve duration engine may include continuous variable valve duration (CVVD) device and continuous variable valve timing (CVVT) device including determining target intake valve open (IVO) timing, target intake valve close (IVC) timing, target exhaust valve open (EVO) timing and target exhaust valve close (EVC) timing; determining target intake CVVD, target exhaust CVVD, target intake CVVT and target exhaust CVVT to satisfy the target IVO, IVC, EVO, and EVC timings; performing feedback control of the CVVD by learning minimum value of the CVVD and maximum value of the CVVD; performing feedback control of the CVVT based on profile information of the valve; and determining real IVO timing, real IVC timing, real EVO timing, and real EVC timing based on the feedback control of the CVVD and the feedback control of the CVVT.