Connecting method and pressing parts of concrete product

The invention provides a connecting method and pressing parts of concrete product, which can effectively exert the elasticity of the adhesive, and further improve water resistance between concrete products. The binding method for the box type culvert related by the embodiment is characterized in that an adhesion surface area (3) is divided from the adhesion surface (1) coated with adhesive (4) by using the surface as the elastomer (2) for adhering the surface layers (21b, 21b) without the use of adhesive (4), and the adhesive (4) is filled into an adhesion area with boundary limited in order to bind with the box type culvert (100) by limiting the boundary of the adhesion surface area by adhesion surface (1) opposed to the box type culvert (100) with an adhesion surface area defined and an elastomer (2).