Waterproof sealing structure for rooftop power generation system

The disclosure belongs to the photovoltaic technical field, and particularly relates to a waterproof sealing structure for a rooftop power generation system. The waterproof sealing structure for the rooftop power generation system includes a first waterproof strip and a second waterproof strip that are arranged up and down, wherein the first waterproof strip includes a first waterproof strip vertical portion, the second waterproof strip includes a second waterproof strip vertical portion and a second waterproof strip horizontal portion that is arranged on two sides of the second waterproof strip vertical portion, the first waterproof strip vertical portion and the second waterproof strip vertical portion are cooperated in an inserting and clamping manner and inserted between two adjacent to-be-sealed assemblies to seal a gap between two to-be-sealed assemblies, and the second waterproof strip horizontal portion is fixed with the to-be-sealed assembly. The disclosure is reasonable in design and simple in structure. The second waterproof strip and the first waterproof strip are provided, and the second waterproof strip and the first waterproof strip are cooperated in the inserting and clamping manner, and jointly inserted into the gap between the to-be-sealed assemblies to seal the gap, so the sealing waterproof effect is good, and the installation is convenient.