Cursor mouse liquid level sensor

A cursor mouse liquid level sensor is characterized in that the structure comprises a floating drum, a floating drum height sensing part and a cursor mouse, wherein the floating drum floats on the liquid level of a water level well and floats up and down along with the liquid level; the height of the floating drum height sensing part is up and down along with the floating drum in real time; and the cursor mouse utilizes the relative height information of the height sensing part as the relative position detection information, and directly enters the data quantity of the relative position detection information as the liquid level detection signal into a computer in real time. The cursor mouse liquid level sensor utilizes the high-speed developed computer technology to combine a floater type liquid level sensor with the computer directly to enhance the performance stability of the liquid level sensor, so as to realize network transmission and remote monitoring.