The effects of pulse energy and spot overlap ratio on the wettability of ceramic tools processed by femtosecond lasers are investigated. The wettability of the alumina ceramic tools after laser treatment is investigated by measuring the contact angles. The experimental results show that the femtosecond laser can change the wettability of ceramic material surfaces. The superhydrophilic surfaces and the superhydrophilic-based cutting fluid surfaces can be prepared if suitable laser energy density and spot overlap ratio are chosen. The wetting speed of water based cutting fluid on the laser-processed surfaces is exponentially decaying with the contact angle.