The invention provides a bonding and sealing material, which contains the following raw materials in parts by weight: 30-35 parts of aromatic hydrocarbon oil, 2-5 parts of 8903 modifier, 10-15 parts of SIS (styrene-isoprene segmented copolymer), 8-10 parts of PIB (polyisobutylene), 10-15 parts of tackifying resin, and 15-20 parts of fillers. The bonding and sealing material can meet the required joint stripping strength and shearing strength indexes of modified bituminous waterproof sheet materials and high-polymer waterproof sheet materials, the bonding strength at the overlapped position of the sheet materials is greatly improved, the waterproof performance is integrated as a whole after construction and the waterproof structure is firmer.