The invention discloses a formation fracture space reconstruction method based on rock core measure. The formation fracture space reconstruction method based on the rock core measure comprises the following steps: step 1 of selecting fracture rock core, step 2 of scanning and processing a fracture rock sample through non-contact type measure system and obtaining a surface chart, step 3 of acquiring form data through a three-dimensional point cloud data reverse engineering software, step 4 of exporting the form data, generating a point cloud file, step 5 of generating the point cloud file to a fracture space grid chart by using a matrix laboratory ( MATLAB), step 6 of drawing contour lines, step 7 of processing and generating a space height map, and step 8 of conducting necessary rotation and move to the space height map, and obtaining a reconstruction fracture space model. The formation fracture space reconstruction method based on the rock core measure has the advantages that the height of the reconstruction fracture space model acquired through reconstruction is the same as an actual fracture form, precision is improved significantly, feasibility and practicability are achieved, digital simulation research of mesomechanics can be well satisfied, and necessary reference for further research of reservoir network fracture plane, output volume prediction and pressure sensitivity test is served.