Disclosed in the present invention are a smart terminal and a smart wristwatch. The smart terminal comprises a metal casing, a wireless communication unit, a human body information detection unit and a signal selection unit. The wireless communication unit comprises a wireless antenna, the metal casing serves, completely or partially, as an antenna area where the wireless antenna is disposed, and a common conductive line is provided for the antenna area. The human body information detection unit comprises at least two detection contacts, one of which is disposed in the antenna area. The detection contact in the antenna area and the wireless antenna are respectively connected to one end of the common conductive line, while the other end of the common conductive line is connected with the signal selection unit. The signal selection unit is used for selecting the signal from the wireless antenna out of the signals transmitted over the common conductive line and sending the signal to the wireless communication unit, and also for selecting the signal from the detection contact and then sending the signal to the human body information detection unit. With the technical solution provided in the present invention, overcame is the problem in the existing smart terminals that there is insufficient accuracy in test results due to size limitation.La présente invention concerne un terminal intelligent et une montre-bracelet intelligente. Le terminal intelligent comprend une enceinte en métal, une unité de communication sans fil, une unité de détection d'informations de corps humain et une unité de sélection de signaux. L'unité de communication sans fil comprend une antenne sans fil, l'enceinte en métal sert, complètement ou partiellement, de zone d'antenne dans laquelle l'antenne sans fil est disposée, et une ligne conductrice commune est prévue pour la zone d'antenne. L'unité de détection d'informations de corps humain comprend au moins deux contacts de détection, dont l'un est