Provided are a metal medical device such as a guide wire or stent in which a lubricant layer is firmly bonded to the surface of the metal medical device to impart lubricity and low protein adsorption properties and/or low cell adsorption properties to the surface and, further, improve the durability of the lubricant layer on the surface of the metal medical device, thereby suppressing deterioration of sliding properties and deterioration of low protein adsorption properties and/or low cell adsorption properties, and a method for preparing such a metal medical device. The present invention relates to a metal medical device having lubricity and low protein adsorption properties and/or low cell adsorption properties, the device having a surface at least partially treated with a silane compound containing a functional group, the functional group being a polyoxyalkylene group, a metal salt-containing hydrophilic group, a halogen salt-containing hydrophilic group, or a fluorine-containing hydrophobic group.
