A joystick-type mouse includes a main body and a mode detecting assembly. The main body includes a controlling module. The mode detecting assembly includes a coupling member, a posture sensor and a magnetic field sensor. A pivotal part is located at a first side of the coupling member and pivotally coupled with the main body. A magnetic part is located at a second side of the coupling member. The posture sensor and the magnetic field sensor are disposed within the main body and electrically connected with the controlling module. Consequently, the mouse can be switched to a joystick mode.