The invention relates to the field of water conservancy projects, in particular to a PCCP bell and spigot joint structure and a construction method thereof. Firstly, the interior of a bell and spigotjoint is cleaned, the joint is coated with SK primer, and then a plastic sealing material with the width the same as that of the joint is placed into the joint; secondly, the plastic sealing materialis compacted, so that the lower space in the joint is full of the sealing material, and the sealing material and the joint are closely combined; the sealing material is filled with epoxy putty to be flush with the surface, then the surface of the epoxy putty is coated with an elastic polyurethane/polyurea coating or transparent adhesive tape adheres to the surface of the epoxy putty to serve as anisolation layer, and the upper side of the isolation layer is coated with a bottom high-toughness epoxy coating, wherein the epoxy coating is 10-20 cm wider than the isolation layer; a gum dipping glass fiber belt is laid and coated with a surface high-toughness epoxy coating. The structure and the construction method have the advantages that construction is simple, backwater pressure resistanceis high, erosion and abrasion resistance is good and sanitary standards of drinking water are met while the deformation capacity of a PCCP bell and spigot is maintained moderately.