After the TPO waterproofing membrane is connected by heat welding, a tight and seamless waterproof layer is formed, which effectively prevents water penetration and leakage. Heat welding makes the joints between the membranes firmly bonded, avoiding the loosening problem that may occur in traditional bonding processes, thereby improving the overall waterproof performance. In addition, the TPO membrane connected by heat welding has excellent weather resistance and UV resistance, which is suitable for roofing projects exposed to harsh environments for a long time, ensuring long-term protection of the building.