A Bluetooth mouse for fast switching linking objects comprises a signal processing circuit triggered by a key unit to generate a control signal according to a displacement amount of the mouse. The signal processing circuit is electrically connected with a Bluetooth transmission device. The mouse has a pairing information memory storing pairing codes for establishing data transmission linkages between the Bluetooth transmission device and at least one information processing systems. The key unit is programmed one key or a combination of the keys to trigger the signal processing circuit to generate an object-switching signal. The object-switching signal drives the Bluetooth transmission device to access one pairing code from the pairing information memory according to the displacement amount of the mouse, and establishes a data transmission linkage with one information processing system corresponding to the pairing code.
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