To provide a portable eyewashing device which facilitates eyewashing by automatic motion and a spill of an eyewash is prevented.

The portable eyewashing device is equipped with a main body 1 which accommodates a motor 10, an eye bath basin 30 which can be attached to and detached from the main body and a transmission member 2 which transmits the rotation of the motor to the eye bath basin, wherein a vibration generating apparatus is constituted of the motor and an eccentric member 53 which is rotated by the motor. The transmission member is formed by concavo-convex engagement joints 5 and 20, and the concavo-convex engagement is carried out when the eye bath basin is attached to the main body.