The invention discloses an ink-jet printing head which comprises at least one jetting unit, a cover film, a piezoelectric ceramic actuator, a cover plate, a fluid inflowing pipeline, a fluid outflowing pipeline and a driving circuit device. The cover film, the piezoelectric ceramic actuator and the cover plate are matched with the jetting unit, the piezoelectric ceramic actuator and the cover plate are connected to form a plurality of disconnected and independent piezoelectric ceramic units, the cover plate is connected with the jetting unit, a plurality of fluid grooves are formed in the position, arranged on one side of the jetting unit, of the connecting contact face, the piezoelectric ceramic units correspond to grooves in the fluid grooves in position, the fluid grooves and the cover plate form a fluid channel, each fluid channel is correspondingly provided with at least one nozzle to be communicated with the exterior, and therefore the ink-jet printing head forms the side face or end face jetting. Correspondingly, the invention further discloses an ink-jet printer. According to the ink-jet printing head and the ink-jet printer, on the premise that the deformation amount of the piezoelectric ceramic actuator can be increased, and the effective jetting motion of the large-particle-size ink is achieved, the adjacent nozzles can conduct simultaneous motion, therefore all the nozzles can work at the same time, and the working efficiency is improved.