To ensure a closing effect when a lacrimal punctum plug device is worn at the lacrimal punctum, to surely prevent the device from sinking into the lacrimal duct, and to enable the device to be removed very easily.

A lacrimal punctum plug device comprises: a plug main body 31, which has a shell portion 35 having a cylindrical outer peripheral surface, an end portion 36 provided in such a way as to continue with one end of the shell portion 35 and getting smaller in diameter toward an end, and a flanged portion 37 provided at the other end of the shell portion 35; and a cord 33 one end of which is connected to the flanged portion 37 of the plug main body 31. A large-diameter stopper or another plug main body 31 can be provided at the end of the cord 33. A through hole extending axially through the flanged portion 37, the shell portion 35, and the end portion 36 and having its minimum diameter size specified can be formed through the plug main body 31.