Mouse and method for simulating touch operation

The invention discloses a mouse which comprises a left key module, a right key module, a photoelectric module, a Bluetooth module and a micro processor, wherein the left key module comprises a left key, a first sensor and a left key interface; the right key module comprises a right key, a second sensor and a right key interface; the photoelectric module and the Bluetooth module are arranged in the right key module; when the left key interface is connected with the right key interface to form the electric and mechanical connection, the mouse is used as the conventional wireless mouse; the left key and the right key respectively execute a left key function and a right key function of the conventional mouse; the photoelectric module identifies displacement information of the mouse; a micro controller receives information of the left key, the right key and the photoelectric module; the Bluetooth module sends information of the micro controller; when the left key module is separated from the right key module, the right key module moves relatively to the left key module; the second sensor senses relative position information of the first sensor; the micro controller receives the position information and the right key information; and the Bluetooth module sends the information of the micro controller. Moreover, the invention also provides a method for simulating touch operation by using the mouse.