A manufacturing method of a joined body in which a plurality of structures are joined to each other, the method including forming of an adhesive layer on one face of a medium; adjusting of viscosity of the adhesive layer formed in the forming of the adhesive layer; transcribing the adhesive layer of which viscosity is adjusted in the adjusting of viscosity to the structure; and measuring of surface roughness of the adhesive layer on a transcribing film in a stage before the transcribing.