A method for opening an automatic two-leaf door comprising a movement area interesting all of a width of a door area, and a presence area which interests all of a width of the door area and is located between the door and the movement area, which comprises following activities: - monitoring a presence of persons or things in the areas by means of respective motion and presence sensors; - collecting a signal from the sensors in order to command opening and closing of the door; - sub-dividing the movement area into a series of adjacent movement zones (M 1... M x), distributed regularly in a transversal direction to the door area such as to cover all the width of the area; - sub-dividing the presence area into a series of adjacent presence zones (P 1... P x), distributed regularly in a transversal direction to the door area such as to cover all the width of the area; - independently monitoring each of the adjacent movement zones (M 1... M x) by means of a specific motion sensor (A 1... A x) exclusively dedicated to monitoring movement of persons or things in the respective zone; - independently monitoring each of the adjacent presence zones (P 1... P x) by means of a specific presence sensor (B 1... B x) exclusively dedicated to monitoring a presence of persons or things in the respective zone; the method being characterised by: - sending the signals of the specific motion sensors (A 1, A x) to a logic circuit (3, 4) commanding activation of the movement means (23, 24, 25, 26) of at least a leaf of the door such as to cause opening thereof up to involving a whole width occupied by the specific motion sensors (A 1... A x) that have been activated; - sending the signals of the specific presence sensors (B 1, B x) to a logic circuit (3, 4) commanding activation of the movement means (23, 24, 25, 26) of at least a leaf of the door such as to inhibit closure thereof. - monitoring a presence of persons or things in the areas by means of respective motion and presence sensors; - collecting a signal from the sensors in order to command opening and closing of the door; - sub-dividing the movement area into a series of adjacent movement zones (M 1... M x), distributed regularly in a transversal direction to the door area such as to cover all the width of the area; - sub-dividing the presence area into a series of adjacent presence zones (P 1... P x), distributed regularly in a transversal direction to the door area such as to cover all the width of the area; - independently monitoring each of the adjacent movement zones (M 1... M x) by means of a specific motion sensor (A 1... A x) exclusively dedicated to monitoring movement of persons or things in the respective zone; - independently monitoring each of the adjacent presence zones (P 1... P x) by means of a specific presence sensor (B 1... B x) exclusively dedicated to monitoring a presence of persons or things in the respective zone; - sending the signals of the specific motion sensors (A 1, A x) to a logic circuit (3, 4) commanding activation of the movement means (23, 24, 25, 26) of at least a leaf of the door such as to cause opening thereof up to involving a whole width occupied by the specific motion sensors (A 1... A x) that have been activated; - sending the signals of the specific presence sensors (B 1, B x) to a logic circuit (3, 4) commanding activation of the movement means (23, 24, 25, 26) of at least a leaf of the door such as to inhibit closure thereof.