In this study, the adjustments and changes of subwavelength ripples induced by ultrafast laser on titanium are experimentally investigated. In our experiments, 1064 nm picosecond laser and 800 nm femtosecond laser are used to irradiate the surface of metal titanium. The effects of incubation on the formation of subwavelength ripples are studied by changing pulse number and irradiation modes. The experimental results show that: 1) the overall trend of ripples areas, ablated areas and periods of rippled structures increases as the number of pulses increases; 2) due to the incubation effects, the increase is different; 3) by designing laser pulse irradiation modes, samples firstly irradiated by several shots and then by remaining shots, have better surface morphologies. Hence, large-area, uniform rippled structures can be adjusted by designing laser pulse modes and pulse number.