The present invention discloses a smart terminal and a smart wrist watch. The smart terminal comprises a metal housing, a wireless communication unit, a human body information detection unit and a signal selection unit, wherein the wireless communication unit comprises a wireless antenna, all or part of the metal housing is used as an antenna area for setting the wireless antenna, a common conductor is provided for the antenna area； the human body information detection unit comprises at least two detection contact points, one of the detection contact points is provided in the antenna area； the detection contact point in the antenna area and the wireless antenna are connected with one end of the common conductor, respectively, the other end of the common conductor is connected with the signal selection unit； the signal selection unit screens out a signal from the wireless antenna out of a signal transmitted on the common conductor, sends the signal to the wireless communication unit, screens out the signal from the detection contact point and sends the signal to the human body information detection unit. The present invention provides a solution solving the problem that the test result of the smart terminal in the prior art is not accurate enough due to the size limitation.
