A medical device of which the surface exhibits lubricity and/or antithrombotic activity when wet. The medical device includes a base material layer, and a hydrophilic layer that is supported on at least a portion of the base material layer, in which the hydrophilic layer is obtained by forming a crosslinked structure by reacting a compound having plural thiol groups in a molecule with a compound having reactive functional groups binding to the thiol group and hydrophilic groups in a molecule, and the reactive functional groups are thiol groups, alkenyl groups, acryl groups, or methacryl groups.
