The invention discloses a method for determining the self-supporting fracture conductivity after hydraulic fracturing for a shale reservoir through an experiment. The method for determining the self-supporting fracture conductivity after the hydraulic fracturing for the shale reservoir through the experiment comprises the following steps: selecting the outcrop of a shale reservoir interval with natural fractures, and cutting the outcrop rock sample into not less than eight square rock plates with the natural fractures in the extension direction of the natural fractures; obtaining the rough topography data of the fracture surface of each square rock plate by a laser scanner, and calculating an area tortuosity; selecting a rock sample; carrying out model building on the rough surface of theselected rock sample; then importing a processed curved-surface model into an engraving machine, selecting the underground core of the shale reservoir interval or the outcrop rock of the same horizon,and carrying out repeated production; calculating shear slip amounts at the different positions of each self-supporting fracture according to the data of the shale reservoir; and finally carrying outa conductivity test on the shale sample after shear slip. According to the method for determining the self-supporting fracture conductivity after the hydraulic fracturing for the shale reservoir through the experiment, a test condition is enabled to meet the actual condition of the reservoir, and conductivity meeting the condition of the reservoir is obtained.