Method and system for testing adhesive force of solid-liquid interface

The invention discloses a method for testing the adhesive force of a solid-liquid interface. The method comprises the following steps: pasting strain gauges on the pressed surface and the pulled surface of a pure camber beam of a bending rod, wherein the bending rod comprises a pure bending beam and a cantilever beam which are vertically connected with each other; hanging a liquid pendant at the free end of the cantilever beam, and attaching a test liquid drop to the bottom surface of the liquid pendant; vertically descending the bending rod, enabling the test liquid drop to be in contact with the surface of the test solid, and recording an adsorption change value [delta][epsilon]1 of the strain gauge; vertically lifting the bending rod and enabling the test liquid drop to be snapped, and recording a stretching change value [delta][epsilon]2 of the strain gauge; and calculating the adsorption adhesive force F1 according to the formula F1=k[delta][epsilon]1, and calculating the tensile adhesive force F2 accord