Photoelectric static leveling instrument and settlement monitoring method

The invention provides a photoelectric type static force level gauge and a settlement monitoring method. The photoelectric type static force level gauge comprises a liquid storage tank, a cover body, a floating piece, a communicating rod, a scale piece, a collecting device and a light source. The liquid storage tank is used for storing liquid and the base is placed in a to-be-detected area; the cover body is arranged on the top surface of the liquid storage tank; the first end of the communicating rod is connected with the floating piece, and the second end extends into the cover body through the through hole of the liquid storage tank; the scale piece with preset scale information is arranged on the communicating rod and is positioned in the cover body or the liquid storage tank; the acquisition device is arranged in the cover body and is opposite to the scale member so as to acquire image information of the scale member. According to the method, width information and position information corresponding to pr