The fusion tile hot welding construction uses high-temperature heating to melt and bond the tile joints to form a seamless continuous waterproof layer, which has significant advantages: first, it has strong sealing, which completely eliminates the risk of leakage caused by traditional overlap or gluing, and is especially suitable for rainy and windy areas; second, the structure has high integrity. After welding, the tiles are tightly combined with the base layer, the wind resistance is improved, and the durability can reach more than 25 years; third, the construction is efficient and environmentally friendly, and no additional auxiliary materials are required (such as waterproof glue, nails), which reduces the later maintenance costs. At the same time, the flat welding surface makes the roof more beautiful, combining functionality and economy.