Mobile terminal, wearable device and system and method for judging user state

The invention discloses a mobile terminal, a wearable device and a system and method for judging a user state. The method comprises the steps that the wearable device collects the diameters of the pupils of a specific user in the normal state under different scenes to be used as the threshold value of the diameters of the pupils of the user under different scenes to be sent to the mobile terminal; the wearable device collects the diameters of the pupils of the user in the specific scenes and sends the diameters of the pupils to the mobile terminal; the mobile terminal receives the diameters of the pupils, and compares the diameters of the pupils with the threshold value under the specific scenes; if the diameters of the pupils are larger than or smaller than the threshold value, it is judged that the user is in an abnormal state; if the diameters of the pupils are equal to the threshold value, it is judged that the user is in a normal state. Through the mode, the abnormal state of the user can be found in time, a prompt is given out for the abnormal state, the user can take measures in time to adjust, and the health of the user is prevented from being influenced.