The invention relates to a micro-nano indentation test method suitable for a complex curved surface, and belongs to the technical field of material micro-mechanical property test. According to the method, the surface topography of a material with the complex curved surface is scanned based on a three-dimensional contourgraph, surface topography information of the material is obtained, the inclination angle of a plane where a test piece is located is adjusted to rapidly find an area suitable for indentation test, indentation test is then carried out the area, and the material does not need cutting, grinding and polishing of an original process. The problems that there is a prefabricated processing hardening defect of the surface of the test piece and test piece preparation is tedious and complex in existing leveling of the micro-nano indentation test piece are solved. Compared with the prior art, the method of the invention has the advantages of saving test time, being high in materialsurface performance retentivity and the like, being simple in operation and easy to control, and having a wide application prospect in multiple fields.