A user health monitoring system having 3D glasses and a display apparatus and a display apparatus and a control method thereof, the user health monitoring system including: 3D glasses which obtain biosignal information of a user and transmit and a display apparatus which receives the biosignal information transmitted by the 3D glasses, obtains a health index of the user by using the biosignal information and controls a display state according to the health index. With this configuration, a users health condition may be monitored in real-time with a biosignal of the user viewing a 3D image and a 3D display state may be controlled according to the users health condition to thereby protect a users health.
