A method of manufacturing a prepreg composite panel with relief geometry, the prepreg comprising at least one layer consisting of reinforcing fibers that are spread continuously along the layer and a resin that impregnates said fibers; the method comprising the following stages: - a first stage, of stacking, which comprises the spreading of sections of layers of prepreg until a stack of prepreg is obtained, over a mold having cavities with a shape defined by the corresponding geometry reliefs of the panel with the relief geometry to be obtained; - a second stage, of forming, which comprises the application of a cycle of temperature and pressure to the stack of prepeg provided on the mold until the stack acquires a final shape with the geometry reliefs of the panel with the relief geometry to be obtained; the pressure applied being selected from between either: a pressure against the stack and the mold, or a vacuum between the stack and the mold, and a combination of both thereof; and - a third stage, of finishing, which comprises the application of a cycle of temperature and pressure to the stack until the resin of the prepreg is cured; characterized in that - the stacking stage comprises: ∘ continuous spread of sections of layers between/up to, or from the corresponding lines of discontinuity; wherein the lines of discontinuity are the points of the fibers of each layer through which layers are cut, and which are positioned within a contour of the reliefs allowing during the forming stage local deformation of the stack since adjacent sections of layer of the prepreg of the stack are able to slide relative to each other. - a first stage, of stacking, which comprises the spreading of sections of layers of prepreg until a stack of prepreg is obtained, over a mold having cavities with a shape defined by the corresponding geometry reliefs of the panel with the relief geometry to be obtained; - a second stage, of forming, which comprises the application of a cycle of temperature and pressure to the stack of prepeg provided on the mold until the stack acquires a final shape with the geometry reliefs of the panel with the relief geometry to be obtained; the pressure applied being selected from between either: a pressure against the stack and the mold, or a vacuum between the stack and the mold, and a combination of both thereof; and - a third stage, of finishing, which comprises the application of a cycle of temperature and pressure to the stack until the resin of the prepreg is cured; characterized in that - the stacking stage comprises: ∘ continuous spread of sections of layers between/up to, or from the corresponding lines of discontinuity; wherein the lines of discontinuity are the points of the fibers of each layer through which layers are cut, and which are positioned within a contour of the reliefs allowing during the forming stage local deformation of the stack since adjacent sections of layer of the prepreg of the stack are able to slide relative to each other. ∘ continuous spread of sections of layers between/up to, or from the corresponding lines of discontinuity; wherein the lines of discontinuity are the points of the fibers of each layer through which layers are cut, and which are positioned within a contour of the reliefs allowing during the forming stage local deformation of the stack since adjacent sections of layer of the prepreg of the stack are able to slide relative to each other.