This invention provides a syringe pump capable of holding the plungers of various types of syringes in tight contact with a slider assembly by a simple operation. The syringe pump of the invention includes grip members which are biased, on the press surface of a slider assembly, in a closing direction and toward the press surface. A clutch lever is operated to rotate the grip members in an opening direction and move them in a direction in which the grip members are separated from the press surface.
