PROBLEM TO BE SOLVED: To provide a health management system and a building capable of skillfully guiding a user to keep grasping his or her health condition every day.SOLUTION: The health management system includes: a measurement part 1 for measuring the biological data of a user; an arithmetic part 2 for performing arithmetic processing by using the biological data; a display part 3 for displaying the measurement result of the biological data on the basis of the arithmetic result of the arithmetic part 2; and an operation part 4 for selecting the measurement result of the biological data. The display part 3 is disposed on the back face of the mirror of a wash stand, and the mirror has a function as a half mirror. Also, the operation part 4 is configured to induce the user to grasp his or her health condition when waking up, and to induce the user to grasp his or her health condition when coming home.