To provide an adhesive tape for sealing a food container excellent in sealability, easy openability and removability, also high in safety.

The adhesive tape for sealing a food container has a substrate layer and an adhesive layer, where the adhesive layer is formed from an acrylic adhesive including an acrylic copolymer having at least a repeating unit derived from n-butylacrylate, a repeating unit derived from a hydroxy group-containing monomer, and a repeating unit derived from a carboxy group-containing monomer; a rosin ester compound and a polyisocyanate compound.