Wireless tiny finger-ring mouse suitable for mobile terminal

The invention relates to a wireless tiny finger-ring mouse suitable for a mobile terminal, which has the advantages of small size and wireless transmission. The mouse controls a cursor to move by utilizing the inclination angle and the direction change of a finger and can be universal to any mobile terminal with an external data interface. The mouse comprises a wearing terminal on the finger and an adapter inserted on a data interface of the mobile terminal, wherein the wearing terminal is internally provided with a three-axis action sensor. In the mouse, three-axis real-time acceleration information output by the three-axis action sensor is divided into dynamic acceleration information caused by movement and static acceleration information caused by inclination; the dynamic acceleration information caused by movement is filtered out, and only the static acceleration information is used as input to determine the inclination angle and the direction change of the finger; and the nonlinear conversion from the acceleration information to displacement information is realized through a nonlinear conversion algorithm on the basis of a conversion formula of the acceleration and the displacement.