Controllable microstructures are formed on a glass surface after irradiation of a focused $800\mathrm{nm}$ , $250\mathrm{KHz}$ femtosecond laser beam. Field-emission scanning electron microscope and 3D measuring laser microscope images reveal that the induced structures are circular and linear protuberances and can be controlled from $\mathrm{10}\mathrm{\mu m}$ to hundreds of micrometers in width, and from $1\mathrm{\mu m}$ to tens of micrometers in height. The protuberance structure is proposed to be formed as a consequence of the laser-induced high temperature and pressure owing to linear and nonlinear absorption near the laser focal point, and low softening and melting temperature of the glass sample.