The invention provides a single-stage double-shaft pre-deformation method for endowing a pavement joint material with a shape memory function, belongs to the technical field of cement pavement, and solves the problem that existing single-stage single-shaft pre-deformation method can only endow the material with the shape memory function in one direction, and thus the material is poor in self-healing effect. A cruciform specimen of a shape memory polymer matrix composite is produced at first, pre-compaction deformation is performed along the vertical direction at the temperature higher than a glass-transition temperature, meanwhile prestretching deformation is performed along the horizontal direction, and thus the joint material is endowed with the shape memory function in both horizontal and vertical directions; then the shape memory effect of the joint material after pre-deformation is measured and further synthesized with other operational performance of the joint material to determine reasonable stretching and compression pre-strain values for endowing the joint material with the shape memory function. According to the pre-deformation method provided by the invention, the joint material actively adapt to cyclic change of the width of the cement pavement joint, usability and durability of the joint material are improved, and service life of the cement pavement is prolonged.