[Problem] Provided is a liquid administration device with which it is possible to temporarily stop administration.[Means for Resolution] Provided is a liquid administration device 10 including: a structure 40 which includes a syringe 60 capable of accommodating a liquid therein and a needle tube 66 communicatable with the inside of the syringe 60; an operation unit 20 for discharging the liquid inside the syringe 60 from the needle tube 66 by moving to the structure 40 in a distal direction; a cover member 30 which is movable between a protection position at which the needle tube 66 is covered, and an exposure position from which the needle tube 66 is exposed; a second coil spring 11 which biases the cover member 30 in the distal direction; and a first coil spring 12 which biases the operation unit 20 to the structure 40 in the distal direction. The operation unit 20 and the structure 40 have a resistance projection portion 96 and a resistance claw portion 105 which come into contact with each other while changing a contact position when the operation unit 20 moves to the structure 40 in the distal direction and applying pressing force to each other.