Disclosed is a rotary bridge micro-switch. The rotary bridge micro-switch comprises an insulating base, wherein a first terminal, a second terminal and a third terminal are arranged on the insulating base and are spaced from one another by the insulating base; and the insulating base is rotatably connected to a conducting plate having one end abutting against the first terminal. The rotary bridge micro-switch further comprises a spring having two ends respectively connected to the other end of the conducting plate and the insulating base. When the spring is not compressed, the first terminal is connected to the second terminal through the other end of the conducting plate. When the spring is compressed, the first terminal is connected to the third terminal. The rotary bridge micro-switch can be pressed to realize switching between two circuits.