The invention relates to a mute mouse. The mute mouse comprises a pedestal, a mouse shell, a button, a roller wheel, a circuit board, a magnetic body, a magneto-resistive sensor and a spring. When the button is pressed, the spring is compressed to move the button downwards, the magnetic body is close to the magneto-resistive sensor but is not contacted with the magneto-resistive sensor so that the magneto-resistive sensor generates an enabling signal to the circuit board; or when the button is not pressed, the spring extends and is pressed against the button to move the button upwards, the magnetic body is far away from the magneto-resistive sensor so that the magneto-resistive sensor generates a disabling signal to the circuit board. The mute mouse of the invention is used as a substitute for a micro switch by using the property that the magneto-resistive sensor can be triggered by the magnetic body. In an operation process, the magneto-resistive sensor is not contacted with the magnetic body when triggered to avoid causing a button to produce sound, so the defect that the button pressing sound of the conventional mouse is too loud is improved.